Jim:
You really know how to push my buttons - I found serial numbers 1 through 5, including the ones on the yoke and the back of the extractor star. #6 doesn't apply because I don't have original grips.

I also found 2 od the 3 assembly #s in the yoke cut and on the yoke. I haven't removed the sideplate to look for the 3rd number.

Why am I doing this?