Hello to all. Today I received my first real Colt 1911 firearm. It is a commercial model made for the Argentina Navy in 1941. Serial #C1996xx. It is not import marked. On the left side of the slide is the usual pat. nos. and Hartford, Conn. On the right side it is stamped REPUBLICA ARGENTINA ARMADA NACIONAL-1941 And then Colt Automatic Calibre .45 with the little pony. On the right front of the trigger guard is stamped the number 99. On the left it is stamped T with a little triangle with a VP inside. The barrel is stamped Colt auto .45 with no other stamps. It is Parkerised and about the first 1 1/2 ins. of the slide is darker than the rest. Does anyone know why the front of the slide is darker than the rest? I've seen others like this but don't know the reason. Any comments on the other marks? It appears to have been fired very little if at all and the Park shows very light holster wear, or just rub marks. Thanks for any replies or comments, James Sorry but I don't have a camera.