It appears to be a .32 Double Action, 4th Model, which would have shipped from S&W between 1883 and 1909. There were 269,600 of them made. From these pictures I would guess it might rate as Excellent condition, and the value would be in the $300 to $400 range. It should be marked 32 S&W on the barrel, but I can't tell that from your pictures. I have a feeling that on close inspection it might show it has been polished out and possibly refinished at some time, in which case the value would be somewhat less.

Welcome to the Forum, and if you could furnish closer clearer pictures, of the top strap of the barrel, and both sides of the barrel it may be able to be identified a little more accurately.

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H Richard
SWCA1967 SWHF244