Similar in appearance to "O.K.". Larger in size and chambered for .38-caliber rimfire cartridge. Barrel 2.6875" long; there was for the first time an extractor. Finish and function unchanged. Right side of barrel stamped "J.M. Marlin/New Haven, Ct./Pat. April 5.1870". "Victor" stamped on top of barrel. Approximately 4,000 manufactured between 1870 and 1881.