Greetings,
I have a colt 1911 and it would appear that the slide is not original to the frame. The slide says Colt MK IV/series 70 Government model and the frame has a serial number of 37926. I cannot find anything else on the frame. On Colts website there is a 38 super frame that was from the mid 40’s and also a 45 frame from early 1911 or so. Not sure how to obtain more info.
Thx
Sunnenman