Colt Model 1871–72 Open Top

The Colt Model 1871–72 Open Top is a metallic cartridge rear-loading .44-caliber revolver introduced in 1872 by the Colt's Patent Fire Arms Manufacturing Company. This handgun was developed following two patents, the first one in 1871 and the second one in 1872, it is estimated that the production span lies primarily between February 1872 and June 1873. There is therefore still some confusion when naming it. It is sometimes named Colt Model 1871 or Colt Model 1872 but at this time the most common accepted names are Colt Model 1871–72 Open Top, Colt Model 1871–72 or simply Colt Open Top.