Manufactured in 1970. This pistol features a "BB" serial number. At the end of the Pre-Series 70 Government model serial number range, Colt produced a limited run of pistols with the new "accurizer" barrel and bushing which were the key new features to the Series 70 line. In all, it is estimated that only 1,700 of these specially marked pistols were produced. Slide features the standard marking of a Pre-Series 70 Government model. Provenance: The Gus Cargile Collection