Hi, I just bought an M1 from the store that I work at and was wondering how much it is worth. It is a postal meter #4133883 (stock also matches this number), underwood barrel, rear sight says PI, front sight EU, under number on the stock it says OG and LW in the sling well, i have 4 15rd clips, 4 30rd clips, and about 12 stripper clips, stamped 5 under saftey lever, the oly thing that I can find internally is b/b on the hammer. The gun is clean, no rust and shoots flawlessly. Thank you for your help.