A limited production of 54 of these "Ten Inch Flattop" revolvers were manufactured to commemorate the 35th anniversary of the Ruger Collectors' Association in 1975. Special features include the non-standard 10" tapered barrel, proprietary serial number block, "high color blue" finish, steel ejector housing, match-polished steel XR3 grip frame with black hard rubber panels, MICRO rear sight and low front ramp sight. Includes a matching factory plastic hard case, shipping box, manual, lock, test casing, and Ruger Collectors' Association certificate.