Smith & Wesson Model No. 3 Second Model Single Action Revolver. 
Serial no. 18505, .44 Smith & Wesson caliber, 8-inch round barrel with fixed front sight. Nickel plated. Walnut grips. Sold with a tooled leather holster with single belt loop and a sliver concho and another silver device mounted to the front.
The William Alberta Collection.

Condition: Excellent. Retaining 95% nickel finish with some trivial loss on the grip straps. Extremely robust action and a worn bore. Excellent mechanical condition. Three screws on the left side of the frame marred. Holster with some scuffing to finish and small crack near the lower belt loop rivet.