Stopped in at a LGS (not too local, about two towns over) to look for a few things. Spotted an older, well-worn S&W revolver marked "M10" (maybe Model 10, I forget) on the tag. Asked to see it and it turned out to be a genuine .38/200, marked .38 S&W on the barrel. Curiously the tag also said (IIRC) "5-shot". It showed a lot of honest wear, no abuse which I could see, and sported diamond checkered grips which looked original and as worn as the finish. Serial number was (no prefix) 882xxx . Also had a hole for the lanyard ring, at the end of the SN if I remember.
Asking price was $250. IF it had been a .38 S&W Special I probably would have it home now but I just can't see buying something which is not in a common caliber.
I'd tried to check a few more things on it (such as lock-up) but the guy behind the counter was hovering over me. Besides, I really wasn't that interested after seeing the caliber.
The same shop has both a roughly 1948 K22 and an early Model 18, both at $800. No boxes as I recall. They also had a flat latch Chief's Special but I think that went (at $500).
SOMEONE in the area seems to be dumping older S&Ws.