I won this NM 1911A1 in an online auction a few days ago and am interested in opinions about its authenticity. It appears to me a 1961 model.

http://www.auctionarms.com/Closed/Di...Num=10033092.0

I have two main concerns. First, the NM barrel is apparently not stamped with the frame's serial number. But I am not sure whether it should be, and page 42 of Jenkin's book on US Military Match and Marksmanship pistols does not tell me whether in 1961 the barrels were necessarily marked with the frame's serial number or not.

My second concern is that the slide has the frame's full serial number stamped on it (rather than just the last four digits) and the numbers look larger than 1/16 inch. Is it possible that some slides were marked that way in 1961?
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