Next questions to answer besides the one above. Is this a single action revolver or double action? Does the revolver have a trigger guard or not?
S&W started out with a 1 1/2 .32 S&W centerfire revolver in 1878-1892.
The .32 Double- Acton 1st through 5th models started production in 1880 and concluded in 1919.
The .32 Safety Hammerless was started in 1888-1937. There was a manual safety on the back of the grip that had to be squeezed as the gun was fired. This was done when the gun was gripped.
That's why we need more info.