How to Clean Coins / Restoration / Conservation - Using Coin Care on Large Cent Coin
Vložit
- čas přidán 9. 08. 2020
- Beware! This video contains some coin cleaning / conservation / restoration, which can be a touchy subject and is not for the faint of heart.
This video shows the product Coin Care (formerly Blue Ribbon) used on a large cent.
UPDATE: see how the 1854 cent graded in this video: • NGC Open Box Coin Grad...
Thanks for watching.
Please comment, share, like and subscribe.
See some of our inventory:
website inventory: oldpueblocoin.com/all-product...
eBay store: www.ebay.com/str/opcsales
Follow us:
www.instagram/thecoingeek
www.instagram/oldpueblocoin
Ben The Coin Geek
Old Pueblo Coin
Great video Ben. Thanks for walking us through this
Once again thanks Ben for an honest look at coins and coin cleaning!
There is a difference between cleaning and conservation. Some would say a fine line. What you are doing is conserving the coin; if left alone, that verdigris would continue to eat away at the copper. By removing it, you ARE conserving the coin and preventing more damage from occurring. That is why the grading companies allow it, unless they see that your cleaning methods have left scratches or otherwise altered the surface of the coin itself, e.g., polishing. I haven't used Coin Care but have a half-dozen others; I really like a product called "Safe Clean" because it's non-toxic and biodegradable. I've had good results with it on silver, nickel and copper, but copper is a little tricky because it reacts to just about any chemical. Good video. And really, for all the naysayers, I've seen so many copper coins that were pitted and had terrible holes from environmental damage. once that layer of metal is gone, there is no fixing it. Think of the coins that are found in the ground metal detecting - look at the damage. There is a professional, responsible way to conserve coins and it should be more accepted. In fact, it IS more accepted among coin dealers. And believe me, the grading companies know when a coin has been cleaned or conserved.
Thank you for the information and the name of the product you use!
hmm... ok.... well if anyone is willing to give me their "worthless" cleaned coins, I'll certainly take them off your hands...
Today’s my first day of getting into coin collecting somebody is noob is noob can get. But as a noob, I would describe your conservation method as trying to get rid of the tarnish, but leave the patina to me that sounds like the best goal for coin collecting because you would think it would, like get rid of the rot, but save the value and ultimately improve appearance dramatically, but still have the aged look. But maybe that’s like if you were an antique collector and I have the wrong line set because aren’t you supposed to want like meant looking coins coins that look brand new, but are real old? Then you would think you would wanna polish a coin, shiny, but That would mean you’d be removing copper actual real material which you don’t want to do because that would definitely scratches, and that would be cheating and changing the weight.
I'm looking forward to the NGC grading. Thanks for the video.
They gonna grade 90% of your coins as cleaned
@@jasonkav and they didn't. I was surprised though.
@@carg2528 right on
How’d it go?
Thanks. I mainly worry about pvc damage on silver coins, which a good bath in acetone usually helps. I’ve gotten a few coins graded this way without the cleaned designation
How long do you let a silver coin sit in acetone?
@@phipir4054
Acetone won't harm the coin if the coin sits in the acetone for a long time. It might take a while to work if there is a lot of junk on the coin. If the acetone doesn't work then you might have to go to something a little stronger. Sometime I will use something called MS70 but you have to be careful how you use it. If the coin is corroded then the MS70 might eat away at the coin. I used MS70 on an old Indian Head cent that I have and because there was a lot of corrosion on the coin the MS70 ate away at so much of the coin the coin is about only half as wide as it was before. You don't want to use MS70 on a coin that is heavily circulated unless you have to because by removing the film from the coin you may be making the scratches on the coin more obvious because the scratches will not longer be hidden and the coin will look like a shiny, scratched-up cleaned coin. Unless the coin is corroded the MS70 won't directly harm the coin but the coin may heavily tarnish after using the MS 70 on it which I think may be caused by either the MS70 reacting to something that was previously used on the coin or from the surface of the coin being exposed to air after taking something off of the coin with the MS70. If using a dip you have to be careful how long you leave a coin in the dip because the dip works by removing a microscopic layer of metal from the coin and if the coin is left too long in the dip eventually all of the luster will be removed from the coin. You can sometime have the same problem with the coin developing tarnish or spots on it as the MS70 when something is removed from the coin and like the MS70 you should never use a dip on a circulated coin unless it is absolutely needed. If you want to remove something from a coin without damaging the coin acetone is probably the safest thing you can use on the coin.
Personally I wouldn't use Coincare on a rare coin. I have been told by other coin collectors that the oil if left on the coin after a while can attract dust which may cause spots to form on the coin
Great video! Great point regarding restoration of the USS Central America coins.
Nice video brother thanks for preserving history.
Love the content. I have a bottle sitting in my eBay cart for a week. I wish someone would reproduce a VerdiCare formulation again. Awesome video timing for me being on the fence. Love the content as always my friend.
Informative. I clean only those coins with little or no numismatic value just to get the gunk off...especially those found while metal detecting. Thanks for sharing!
One of the best ways for cleaning bad metal detector finds is to keep the coin in your pocket for a while.
Muy interesante, gracias por la explicacion.
Great video!!
I use this on silver also. Just a pain to get the stuff off completely with out leaving hairlines. Also contrary to what they say it does affect some toned coins to a degree. I also roll the Q-tip and use cotton tissues to dab dry a coin or a microfiber cloth.
Going to send in all my 90’s close AM and wide AM coins I’m curious to see what my 92 close AM comes back as it looks brand new off the press... thanks for the video, oh and I used the gun cleaner dark brown stuff with a dab of gun lube after it’s clean and wow... never knew about gun cleaner but makes sense
Best video ever!
What solutions are used for coin conservation? Was looking to dip mine in some baths and looking online I have seen Leuchtturm and Lindner offer some gold and silver baths. Are they goood or do you have any recommendations? Thanks! Also are there different dips for proofs vs bullion?
We had house fire and got or coins out after being in weather and burnt. What can we do to clean them up so can tell what they are? We have all kinds varieties we had collected or passed down from grandparents.
Hey Ben. I use dawn also, it’s great at removing gunk. Just be careful.. on copper coins it will lighten them if left on too long. Rub lightly with nitrate gloves if needed.
"Nitrile" gloves. Big difference. :~>
I’ve heard good things about dawn with silver coins too
Will this work on a large cent that I found detecting? Been in the soil for about 170 years and very distressed looking with lots of muck and buildup on it..,thanks
Do you use distilled water to rinse the coin after you wipe off the gunk?
I don't personally clean coins but interesting video. Thanks
Any particular brand of cardboard 2x2’s you recommend? Just getting started and I have a couple coins of sentimental value I want to prioritize and not sure how many of the cardboard ones have PVC in the plastic covering
HOLY COW!
I have this exact coin it is extremely corroded and I'm trying to clean it. Nice to know what it is tho
any videos on removing carbon spots?
Hi Ben .. what about restoration coins with flour-vinegar dough method ... is it safe for bronze coins ??
Any good ideas for Nickel coins? I have an unc 1903 Liberty that was in a relative's album for 60 years that when I took it out had a bad green spot of corrosion.
They have Nic-A-Date coin restorer for nickels
One of the methods I use most of the time and is non damaging is the sticky tack clay stuff that people use on paper posters to hang them on the walls. A lot of kids use them for inside school lockers to hang up photos and schedules. I just knead it up into a ball and roll it across the surface of the coin until it starts to shine up, not to mention it's a good way to keep coins stationary on a hard surface so they don't slide across, or if you're using a date mat, they help hold them to the correct spots so if you accidentally move it around you don't mess it up. It's a neat trick I learned from a watch maker, they use it quite often as they service very delicate brass, copper, and steel mechanical watch parts. If I also had to take a wild assumption, couldn't you in theory also clean gold and silver coins in a watch cleaning machine and watch cleaning chemicals as well? Essentially gold, silver, and copper plating are all the same material as the coin, a watch cleaning machine would also not risk removing the remaining plating by direct surface contact. I don't think it's the chemicals the grading companies care about as much, its the simple fact that a lot of people dont actually understand how easy it it to damage plating and over polish golds and silvers to the point of removing detail by using too much abrasive, definately something as you mentioned, the grading companies do in-house professionally.
I did not learn how to clean a coin!! Where do. U get this blue diamond gunk?
Super cool Ben thanks! Could you show us the coins when you are finished restoring these? Thanks!
I really liked this one. When it comes to conservation -- copper is the tricky one. Not knowing what product actually works without turning the coin pink. I have never used Coin Care, so it was nice to see that it did not change the original color of the coin. I'm curious what other products you have used on copper, both good and bad. I have several with the green verdigris so I may just have to give Coin Care a try. Thanks!
I'll have to think on the ''other products''. Generally the coin ''dip'' that dealers use on silver coins can turn copper coins that pink color.
Like your videos, just subscribed, question, did you send these off for certification? I have scores of large cents that need exactly this. Also have you heard anything like this...aluminum wrap a polished or whizzed silver coins and bake for a bit, the fake surface will vanish? any truth to that?
thanks for tips,
Rey
Certification is a joke, based in America. They have NO idea about grading - their fantasy grades prove this! $30 to $50 to 'grade' each coin??
im into "LOCK-SPORT" this is were you pick locks for fun! my locks are made from copper and have green corrosion on them and they are difficult to work. "COIN-CARE" is $12 for 2 oz and their are less expensive products like "MS-70 Coin Cleaner" $18 for 8 oz. however i do not care about scratches im curious would the "GUN-CLEANER" work for copper?
I have a roll of pennies (wheat) were can i take them to be evaluated?. Can you help me please😊
How do you clean zinc coins? And how do you remove mold?
Why would there not be the risk of visible hairlines resulting from the coin being "rubbed off"? Is it just a "feel" for goin that far but not too far?
What is the best material to Dry off the coin so that no scratching appears when going in for grading Seems like a paper towel would be a little abrasive.
Nice!
So did you use the Gunslick on the coins?? I didn't hear anywhere in the video, that stated exactly what you used. Sorry, if I missed something in the video!
Interesting.
Would PCGS or NGC slab a coin as cleaned after using this.
I just did several videos with some older European coins that were sent to me where they were all taped down with scotch tape on old paper. When I removed them they were sticky so I soaked them in hot water with liquid hand soap. The adhesive did dissolve but some of the copper or bronze ones do still show some green in areas but none would be of enough value to take it a step further with this product
I guess I should have watched to the end before I asked about the grading. Looking forward to see how that goes.
Tape- you want acetone to remove tape residue -
@@TheCoinGeek Thanks for sharing your thoughts, I appreciate your knowledge.
These coins were taped down after WWII.
I did try acetone on a couple of the coins and after a few hours they still had a sticky surface. I then loaded all the rest of the coins in a container, added liquid hand soap and ran hot water from a Keuric coffee machine over them and after a short while the residue came off without any rubbing or scrubbing. This seemed to be the safer solution at the time. Although none of the coins have any value it was an interesting experiment.
GD
I have 23 Morgan Silver Coins ranging from 1878 to 1922. They were all glued into a card 80 or so years ago. When I removed them some paper came off with the coins. Is there anything I can do to remove the paper and glue from the backs?
Soaking them in acetone will remove the paper and glue. Acetone is the main ingredient in nail polish remover. These chemicals are dangerous and one should be very careful to use them.
@@TheCoinGeek Thanks. Great video!
I think you did a couple things wrong. Never rub the coin, use a q-tip to roll the liquid. Next I use a toothpick to move the gunk and wipe the toothpick clean frequently. Please do not rub with a paper towel. I really like your videos, but I had to comment this time.
I like your specificity - so the final trick, how do you dry the coin without using the paper towel?
To answer your drying the coin. A Qtip rolled over, not rubbed. Sometimes a micro fiber cloth.
Actually, that large cent conserved up nicely, check it out: czcams.com/video/3hVlSe0PGao/video.html
I use a blow dryer for drying coins
My uncle is a serious copper collector and this is what he taught me. You’re about never rubbing with a Q-tip or cloth. When applying heavier layers of solutions either use a natural bristle soft paintbrush (recommend) or roll the Q-tip lightly across the surfaces. If agitating heavy crud buildup be very gentle and swirl in a light circular motion. NEVER use toothpicks, because wood is porous and abrasives like sand can embed themselves into the wood. Only use thorns such as rose thorns or other fine pointed thorns and be VERY CAREFUL and GENTLE.
If you’re using this stuff thinking it’s Blue Ribbon it’s not. It’s not known if long term exposure can be harmful, so as with using products like Verdi Care (which I’ve stopped using altogether) I’d recommend an acetone bath afterwards before finishing with a thin layer of Classic Coin Conditioner applied using an extra soft Euro Tool washout brush. I shake the bottle, and wipe the neck of the bottle and the inside of the cap with the tip of the washout brush and that’s all you need to gently brush several coins.
At the end of the day they are your coins and its your choice what you want to do with them, I carefully clean mine (only have silver ones) that need it with a good quality coin cleaner, then they go in an airtight capsule, and so far touch wood they have been fine.
Only in America!! The GOLDEN RULE of coin collecting - NEVER clean them, EVER!
My dad washed a little bunch of coins with a chemical called CLR it is used to clean rust and toilets and it’s cleaning them very good they were in horrible condition cause the were sitting in dirt in my garage it’s 80% plant paced
Can a bath in an ultrasound cleaning machine, loaded with the appropriate cleaning solution, be an aid to getting the gunk out of the details of the coin without using toothpicks, etc.?
Very cool video. I have a 1776 to 1976 Eisenhower dollar coin. My grandfather carried it in his pocket for years. He left it to me, but it’s all dingy and nasty. I don’t care about the condition or what it’s value is. I just wanna have a nice shiny cointo carry in my pocket. Any suggestions?
Got some really nice chocolate copper nothing was devigation that you need that level of cleaning but that's a good trick to know cuz I know how to clean silver and gold. 😊👍
Why did you use a Q-tip and not just dip the coin?
What is in the red frame on the left of the video? It looks cool
Confederate states of America (CSA) bond.
Ben did your coin comeback graded yet?
You did a beautiful job on this video, especially showing clear video of the coin surfaces. Most other coin guys haven't figured out how to keep their camera in focus. YOU mastered it here. Congratulations! This is a difficult topic to demonstrate. I tried cleaning some RB Lincoln cents and they came out with a slightly rainbow tinge to them, which wasn't bad, I'm just worried that someone might say they're cleaned. I think I accidently discovered what some guys are doing to create a somewhat fake rainbow lustre. This has got me a bit confused on how to determine which coins have a legitimate rainbow tint and which are totally natural. When I went to the recent LB coin show, there was a guy there with a whole display case of rainbow toned coins. I didn't buy anything because I felt it was kind of suspicious that all his coins had a too similar tone to them. It was very odd. But after accidently toning one of my coins with a dipping solution, I am trying to do some more research on toned coins, especially copper.
Only problem is that your link to your products page below your video is coming up as a page not found. Since your cleaner has such a generic name, I was curious which coin cleaner you actually are using, so I can buy some. You didn't display it, in your video. You displayed the box of the old cleaner, right?
Well I will be waiting on the result.
Is it ok to use ceramic coating to keep the coins in mint condition?
No- never coat a coin to “preserve” it.
Out of all the coins i have collected there is only 1 coin i would consider having it Proffessional Cleaned, and thats my 1864 LM 2 cent. Its full red 1 die crack thats hard to see and a ever slight die break. it has 2 green spots that have formed in the last 6 months since i got and it drives me crazy that it appeared. Typically im against cleaning but i am very sersious on having it cleaned to preserve it prestiage that it has, plus i the coin absolutly dirt cheap so i can afford the cleaning service once i find someone.
I would suggest using either PCGS or NGC and their conservation/restoration services
We're these graded, what was the result
Will coin loose value due to cleaning
So if NGC or PGCS does it, it's called "conservation", but if Joe Bag O'Donuts does it, it's called "cleaning". Did I get that right? One more question: do the TPGs put a "Conserved" designation on their slabs? OK, a third question for Ben: how difficult is it to get the solution inside the denticles and the loops of the date numerals?
Nope, not from I've seen. "Conserved" coin slabs are identical to regularly submitted coins.
I used NCS conservation service for silver coins at NGC all coins came back graded in regular NGC holders.
Correct-
Neither company denotes restoration-
NGC and PCGS are for MUGS!
@@jeffcollins92 NGC must have mugged you for a lot of money over the years...
I use the eraser end of a #2 pencil ✏️ to conserve my early key-date Lincoln cents in order that they will upgrade from Very Fine to Extremely Fine. 😀🙄🤣😂😂🤣😂🤣😂 Thanks, Ben🤓 for pulling the veil back on conserving Copper coinage !!!
Anthony Tsatsis Well, alright, but I don't see how that relates to the subject of conserving copper coins ?!!? 🤔😖😆🤣😂
hey i just came in there drunk which i apologize in advance for i bought 10 dollars face of mix silvers, also asked u how much u charge to send a coin off to get graded i cant remember how much you said.
Great video, I myself love conserving coins, taking a coin that looks parch and dirty and bringing out the beauty of the coin back to its glory. If you think your technique will make people cringe; you should check out my technique, it may make people explode in their seats, LOL. I have a few videos of how I conserve mine and customer coins and what techniques I use; if you'll interested. My favorite coin that I cleaned was a 1912 Austria 2 Heller, man that coin had some major grim and pvc damage, but with some of my cleaning techniques, and lots of solution(coincare) the end transformation was wow. I have a video of it as well. Thanks for your videos, I have learned a lot from them and from your knowledge. Thanks Johnny
I have a half cent that was treated with Dealer Darkener before/as I was purchasing it. I plan on sending it in for conversation. Is there some procedure wherein I have to tell whoever I send it in too what happened to avoid bad side effects?
Honestly if you Inform them that it has been darkened it will get body bagged for sure. The probability of an old copper that hasn’t been “cleaned” at some point in its life is very slim imho. A lot of the times the hand oils kept them from extreme surface oxidation. Many old copper dealers use jewelers brushes as well because the surfaces of copper are in a constant battle with environmental factors. I say if it looks good send it. Don’t shoot your self in the foot from the start. Just my humble opinion.
Ben the use of Coin Care / Blue Ribbon doesn't concern me, but the rubbing with a paper towel does. In cleaning glasses, I know paper towels are discouraged but cloth towels are preferred, as scratches are more susceptible with paper fibers. Also the rubbing could use loosened dirt particles as a cutting media on the coins. Gentle agitation is needed.
I've been known to agitate....a soft cloth may work better.
Update please!
Thoughts on hydrogen peroxide solution in a ultrasonic cleaner.
Did you end up submitting the coin to get it graded? Thanks.
Yes ! The coin came back graded- problem free !
@@TheCoinGeek you make a video with that coin coming back and graded!
People in comments everyone knows about Acetone and it’s good, this way give the old coin it’s look back without showing any signs of cleaning and watch how he runs it not easy because that cleaner is like blu ribbon it brings it back to new... I knew there was another solvent other than coin care that would work great... gun cleaner and gun lube works wicked brings back the brown and even takes away scratches under the scope
I have a ‘21 High relief Peace dollar, NGC slabbed, graded VF Details “environmental damage”.
It looks like crap but it’s slabbed but it looks like hell but it’s a ‘21 High relief and it’s graded and encapsulated BUT IT LOOKS LIKE CRAP.
Dilemma, huh?
In VF, it’s not worth that much. I would personally crack it out, clean it in acetone and sell or keep as is.
Sounds to me like you should get rid of it !!! I’ll give you $49. 😀🙄🤣😂🤣😂🤣😂🤣
Tarnish?
I guess anyone who plays by the rules has to avoid cleaning in order to get money out of their coins but I for one just like to look at them and imagine the history behind the coin without being overly concerned about whether someone else will be majorly upset at me if I clean them. They are, basically, my coins, I don't plan to sell them and therefore if I like the way t hey look cleaned then no harm done.
Exactly. Few people mention this. At the end of the day they are for my own enjoyment
Definitely use cotton instead of paper to wipe the coins. There is a reason why people wipe eye glasses with cotton instead of paper.
I'm afraid to use Coincare and if I did use it I would never brush the coin the way you are using the Qtip. By brushing the coin you are leaving hairlines on the coin. If you rolled the Qtip on the coin instead of brushing it you are less likely to leave any hairlines on the coin. I have also been told by other rare coin collectors online that Coincare leaves an oily residue on the coin and over time it can collect lint which might later on cause harm to the coin. If I want to take anything off of a rare coin my very first choice would be acetone which is entirely harmless.
If it was a proof coin, that rubbing with the cue tip would leave super fine scratches. Believe me, I've tested it on some proof Ike dollars with the milky haze on them from the mint capsules. They looked way better with haze removed, but I was still left with very fine cotton scratches. Barely noticeable unless you tilt it in the light under high magnification! Actually, I've learned so much by playing around with my coins and dips. With that experience, I can easily recognize a totally untouched coin to a lightly cleaned one. If I had a very valuable coin, I sure would never rub on it with a cue tip. It's probably ok for the type in the video where it probably won't show.
Well cleaning is not good but restoring is if done right as you said shouldn't be a problem and If done proper and was not done before I have heard they do get a legit grade. They only want them and people they approve of restoration witch is not right but 99 Percent of the collectors don't know how to do it so its used as a distraction to not attempt. If its something you want to do you better practice on coins worth less then 5 bucks so its not a real loss. Restoring and cleaning are worlds apart and the outcome can be catastrophic if not carful.
I'm in the middle, generally i'd leave them alone. But that being said, if the coin is absolutely filth encrusted to the point that the coin is almost indistinguishable, I'd clean it (carefully).
It made it look oily to me on the first coin once the oil goes away back to normal
Americas US Mint is using junk metals. I have a few President Dollar coins that are spotted with rust. Are they doing this intentionally to keep coins from lasting beyond 10/20 years?
I need to have a 1809 half cent conserved. As the date is an odd variety looking like both "o over 0" and" 9 over inverted 9 "
*For educational purposes only.
I don’t have a problem if someone wants to do this; however I disagree with someone doing this and selling it as an original surface, or attempting to get by the grading services and get it slabbed as an original non issues non cleaned coin. And not stating that it was done. I personally want a coin that has the highest probability of being an original coin and original surface. Those are the coins I want. Original. I do not have an issue if someone wants to clean their coins, or clean them and sell them as cleaned/dipped.
Well said
I believe you are misunderstanding. A "Cleaned" coin is an improperly cleaned coin. If it is done correctly, it is acceptable and is not marked. Proper conservation is not only accepted it is recommended for many coins. You can find the definitions on the TPG websites. Cheers!
Don I think it’s important for people to know what my definition of cleaning is; I consider conservation cleaning as well. Cleaning removes the original surface, so does conservation. Only in select circumstances would I personally be ok with conservation. For example a shipwreck coin discovery. I’d be ok with coins that are incredibly rare that have been in the ocean be conserved. Such as removing salt/algae/grime. But besides stuff like that, I personally want an original surface on a coin or one that has a higher probability of being original. I think too many people alter coins surfaces for the sole reason of profit. And I’ll tell you that the majority do not want to tell a customer it was done if they know a coin to have gone through this process. If it’s not an issue why do the majority of people hide the fact their coin being sold was altered?
If done correctly conservation does not alter or change the original surface of the coin. That is actually the point of the conservation is to not alter or change the original surface of the coin. Removing the layer of Gunk that is above the surface of the coin actually helps preserve the original surface of the coin. The issue is when people are using chemicals or incoredct ways of conserving the coin that actually alter or remove metal from the coin.
Some people take this topic way too seriously and some people yeah you wish you could have that coin not molested but it is what it is. Apparently making a joke about Scotch-Brite and coins rubs people the wrong way 🤣
To me, if it costs $1 or less or is a worthless damaged, then clean away. Conserving I have no problem with, but when sold it should be stated as such. In essence, your coins, do what you like.
I play conservator with my "constitutional silver" all the time. I bought these coins for their silver content, not their numismatic value, so I want them to look as silvery as possible, regardless of their age. I have had success using diluted solutions of Simple Green and hot water to soak the coins for a few hours. If needed, a gentle brushing around the reeded edges is an easy and effective way to get out the gunk. Works for me, and keeps me busy after a new stack comes my way.
Just did a Wheat Penny, But it's going to need something else to bring out the date was covered in tar☹️ heavy wear, Coin showing doubling 👍
Take a penny and put a drop of Texas Pete and watch what happens. Shines like new money
Is there a way to remove duct tape from nickels and pennies without ruining them please help
I use xylene on copper and nickel coins. Acetone on silver coins. I soak the coins and then let them air dry.
It's verdigris.
Gold doesn't tarnish at all
Why not just dip for few minutes and wipe.
Five per cent acidic white vinegar,dawn,water in Sonic vibrator for five minutes for gold,silver and copper compositios works real nice,it brings coins barely handled to near original luster. Don't use on zinc
Restoration=repairing..
NGC and ANACS have a conservation service. I guess they do it the right way.
Conservative = keep it in a good condition=not harm. Gaza.Palestine
Most paper and cardboards are Not Acid Free !
Talk to Artist Painting Restoration Experts.
Its no big deal to clean the (cinamuck) off a coin. Its not a gun. Its just a coin. They make it look like their the only people on earth that can do it. If i clean one oh,,, heaven forbid. Thats an insult. ive cleaned a bunch in my day with out chems and they aren't scratched or ''wizzed.'' I cleaned my coins all the time way back when i was a kid because i didnt like crap on my money. i had a coin 2 weeks ago and didnt know what it was so i cleaned it and it turned out to be a 1918 penny. i sold it for 1 buck. nice profit eh?
How to…….don’t!
If you want any numismatic value
Never. Clean coins if you dont like. It. Sell it. Dont mess it up.Pal
I find the baking soda cleaning method works best for cleaning muck from copper coins without changing the colour of them.
No, baking soda is too harsh to conserve coins !!!
That's an abrasive. If you're going to use that, be careful....
Its a mild way of cleaning them here, sodium bicarbonate, a tiny amount of salt and a drop of lemon or lime juice to activate it, I am not talking about caustic soda, baking soda is just bicarb with an activating agent.
Auto cup holders! Yuck!