These are all in excellent used condition. Some have very minor scuffing but all perfectly usable and are branded Schneider Optik Kreuznach. One of these may be just the thing for that old folder you've got hanging around.

2 - 24mm
1 - 25mm
1 - 28.5mm
1 - 36mm

$5 each, plus $3 shipping for the first one, additional ship at no extra cost since they'll all fit a small padded mailer. The PO makes me ship these as a parcel because of the mailer's thickness, so it's $3 including tracking.

I can get a picture, but do you really need one? They're lens caps!