I have a 1943 Colt 1911A1 (ser.#87410X) that has an odd stamp (at least to me) By the disconnector, there is a "B". There is also a G, but I know what that is for. I looked at a bunch of different sites and can't find any info.:scratch: Any ideas? I've been trying to get pictures, but it is proving diffucult as it is rather small. Thanks for any help.