The S/N does have an S prefix but a big gap space between S and S/N. I missed that on the initial posting. I removed the grips and the S/N w/o prefix is stamped in the right stock and S/N matches the revolver (That's Good!). The extractor rod end is straight (Headless) and no little knob as on my Victory model. No visible hammer stud in side like the Victory.

What determines long and short action? Feb, 1948 is when the short action was introduced? This hammer has really fine checkering and a shallow thumb cut. That's common sense about the sight tool, No adj. sight, no tool.

I will get some detailed close ups with the grips off and the cyl. open but need to get a light box set up. Good pictures answer a lots of questions.

I have a paperback book about M&P's only called "America's Right Arm" The S&W Military and Police Revolver, by John Henwood, published in 1997. 290 pages with lots of B&W photos of M&P's and accessories. Is anyone familar withthis book?

Thanks for your feedback.

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Elvis Ray Bob
OGCA