easy, look at the trademark and the latch. It's a Smith & Wesson HE.
I believe it is a Model of 1905 (3rd Change??? I think).
Smith & Wesson Model 1905 - Wikipedia, the free encyclopedia
I've got one that is in much better condition that I gave $300 for. If that helps.
My only question is how many patent dates and what range?
The original M&P Value would be $200-$300 probably. How does the barrel look? Any pitting inside? Does the action lock up tight?
Inside the barrel looks good and action is good, just a shame it wasn't stored better.
Can you elaborate on "original M&P"? Like I said I am not much on revolvers
One of the greatest handguns of the 20th century IMHO lest my comments be construed as "testy."
I would contrue them as "accurate" but my Smith & Wesson bias is showing.