To all appearances, the gun is an Iver Johnson Small Frame, hammer type Safety Automatic revolver, First Variation. (The nomenclature is from Goforth, Iver Johnson Arms & Cycle Works Firearms 1871-1993.)
Those were made only in 1894, so the gun is an antique (pre-1899) under Federal law, and also is usually recommended for use only with black powder, though a very limited amount of firing with modern .32 S&W ammunition should not damage the gun.
There is a growing collector interest in I.J. revolvers, and I would guess at a retail value of $100-150. The problem is that few dealers are interested since no parts are available and any kind of warranty at resale would be impossible. The same problem would also apply to any broken or missing parts.
Jim