I think the slide stop should be checkered, but I'll have to dig an original from the back of the safe. I also think the original sights were smaller that the 1911A1, and the rear sight was rounded on the edges. The tang safety was also shorter, it is hard to tell from the pictures. Naturally the magazine should be two tone.
I have one of the last 1911 made in 1923 before they converted to the 1911A1. Mine is a commercial "C" marked. It is really a gem.
