Used pens purchase - Pelikan, Hartman, Senator and Kaweco!

This is the overview of some used pens (and one new), I bought. They include a Pelikan Signum P520, one Senator, 2 Hartman and one Kaweco Special. If you know any more information (model, date or anything else) about these Senator and Hartman, please let me know on the comments bellow.
You can find some of similar pens on eBay:
Pelikan Signum P520: ebay.to/2C32qrg
Hartman Red: ebay.to/2JFP5sX
Hartman Brown: ebay.to/327RSkV
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