Thanks K22fan. Your explanation sounds viable. This is difficult because the gun is being offered from a estate type of shop and was brought in with a few others of various calibers. To me, the gun is in fine condition but needing a good cleaning. Perhaps I missed seeing any prefix letters on cylinder and such as you mentioned due to the buildup of dust, grime inside. Due either holster rub or from hand use, the quite large S&W emblem engraved on the right side is slightly visible, but authentic.
On the left, just under the chamber it says S&W made in the United States, Registera Unastatus.
Springfield, Mass.
That's about it.
The barreling look fine. The blueing at least a 8-9.
Again my thanks.If its a military or police piece, Im fine with that, just trying to date it.At 83 and just now starting to range shoot again and collect older S&W's, its like being a kid again with your first Daisy BB gun
If I can biy this right, I'll show you the pictures...You wizards are great!