thanks Jim. I can see what the 2-piece Colt pin looks like from that drawing.
Apparently there was a early model 1908 and a late model 1908 and the firing pins were different- maybe yours is the later one? See the written description on the vestpockets webpage. I think mine is supposed to be like the one on the vestpocket page and where the head of the pin, that is to the rear of the pin, that is where mine is broken off. There is a spring for mine, and the way it set it was engaging the front end of the pin, the smallest dia. part. I was thinking about finding someone to just make one for me, probably not a hard job.
We live in the greatest country on Earth- always be thankful!