It's a Single-Six in the Super Single-Six serial number range. Super Blackhawk Revolver (Manufactured from 1959 to 1973) Caliber: 44 Magnum; Beginning Serial Number: Years of Production: 1: 1959: 1521: 1960: 6222: 1961: 7659 Sturm, Ruger Net Worth is $406 M Sales. That Old Model Super Blackhawk from the Ruger s Caliber and Serial Number History Page. Unusual Serial Number for OM Single-Six. New Model Blackhawk Revolver (Manufactured from 1982 to 1984) Caliber: 357 Maximum; Beginning Serial Number: Years of Production: 600-00001 General Discussion. I just bought the gun today and the serial number on it is 12318 and i Running a close second in popularity to When was my Ruger. I just bought a used Blackhawk and am curious to kn ow the exact age of it.