Lou45
R.I.P.
Wow, lots of info here! I always assumed the frame was not a Colt part because it has no other marks and because the number looks like it is hand stamped. I will get some better pics tomorrow.
Get some REAL GOOD pics of the RIGHT side of frame as this may well tell us what we need to know. The slide no longer has any relavence at this point; it'll be brought back into play after we determine the frame's origin, if we can.
My eyes may be playing tricks on me, but it also looked like some very faint machining marks on the left side behind the trigger guard below the takedown lever too.
It's out of my depth of knowledge, so I can't make any guesses here.
Yes, there are machine marks from that grip front edge going forward to the guard with a cute li'l idiot scratch too.