Well, seems like you're the person to talk to then!
Here's what I have:
About 20 various 8mm collets (Whitecomb, Hadl, Derbyshire and unknown)
3 8mm step collets (Moseley #1, and a #4 and #5 of unknown brand)
6 jaw chuck (pre-Derbyshire, American Watch Tool Co era)
All on what I think is a vintage Derbyshire box.
Also one piece that looks like it might be an arbor (Levin) and a homemade collet with a flat top milled from aluminum.
[img]http://forums.pelicanparts.com/uploads26
/IMG_20230311_1121452931678631669.jpg[/img]
