What is stamped on the barrel or inside the frame crane?
Smith & Wesson began using letter prefixes systematically in the 1970s. For example, K-frame revolvers had a "K" prefix followed by numbers (e.g., 10K00110 cap K 001 smith and wesson revolver serial numbers database
This guide provides a comprehensive overview of the , how to locate your firearm's numbers, and how to interpret them to determine the date of manufacture. Where to Find the Serial Number (Database Reference) What is stamped on the barrel or inside the frame crane