For many years I sporadically acquired pitons and other climbing anchors primarily for my own climbing use. I did not start cataloging my collection until 2024. At that time my collecting expanded, but there are too many anchors for me to assemble a comprehensive collection, and so I do not try to do so.
If you would like to see a proper collection, I recommend Marty Karabin's site:
Karabin Climbing Museum: Pitons
I have not had time to research or test all of these in detail, and so I am only providing an image gallery at this time.