I see what appears to be maybe a half dozen Herretts target stocks. They're great if they fit whoever wants them for a target pistol, and if they're for popular target pistols like S&W 41, Ruger, Hi Standard, etc.
I was hoping to see a set for Colt Police Positive Spcl. Alas, I must finally place an ad in the correct place.
Those all look pretty good. Someone will need a set.
I like to find things like that! One time I found a set of K square diamond Magnas, and a N set ( the same) Bought a few things CHEAP! Figured out they cost me a $1 a pair. Bob
I bought a set of Roger's for an N frame for $5 at an estate sale. It had a little sticker on the end of the box that said "N frame". I think I sold them for $50.
Most are aftermarket. Your best bet (if you plan to sell them) is to identify what they fit, list them individually on eBay with no reserve, and let 'em ride.