I was wondering if anyone could help me identify a 1911. My friends father has a GI 1911 that is puzzling(at least to me) It has no features of an A1 save the grips and a green parkerized finish which is almost perfect. It is marked US property. The only maker mark is a S in a flaming circle. Is this a Springfield Armory? The serial # is 5052xx. It is in the cardboard box that he bought it in back in 1962 and it is wraped in brown paper that has a wax(?) coating. Any help would be greatly appreciated.