Have you checked proofhouse.com? Flayderman may be able to offer help (can't check my copy, it is in hiding).

 

Hello,
unfortunately nothing is there to find out...
Charles

 

You have the .32 Safety Hammerless 1st model manufactured between 1888 - 1902. Serial number range is 1 - 91417. The guys over on the Smith & Wesson Forum could probably pin it down to the exact year of manufacture and answer any other questions you might have about this model.