Originally Posted by bmcgilvray

Do you see a letter prefix in front of it? I have several Model 10s with serial numbers on the butts that read C XXXXXX or D XXXXXX. My guns span a time period from the early '50s to the mid '70s.

My first Smith & Wesson revolver was a circa 1971 Model 10 with the -6 revision which denotes the Heavy Barrel variation. It's serial number is D 3623670. The 4-inch Heavy Barrels are sho'nuff shooters but the tapered barrel models are better looking in my view.

Actually I can scarcely tell the difference in shooting the Heavy Barrel and the standard 4-inch tapered barrel.