Hi, I just picked up a Officers model in .22 The serial number is 50XX As far as I can tell it is from 1930, first year production. Blue is 99%, no wear, but a couple speckling spots. 90% of them rubed off. Some stayed. Oct 5th 1928 is the last patent date on the barrel. My question is, is there any collector value, when it was made and what is it worth? I do want to sell it.