Starting around 1957–1958, S&W began stamping model numbers inside the yoke cutout (e.g., "MOD 10", "MOD 29"). This is the most important identifier for modern revolvers.
A: Smith & Wesson does not host a public lookup database due to privacy laws and compliance regulations. You must reference printed collector books, consult online firearm communities, or contact S&W directly. smith and wesson revolver serial numbers database
Because sequences restarted for different models, a Model 10 and a Model 36 could technically share the same numeric serial number. Starting around 1957–1958