Colt "Cop & Thug" New Police and the Model 1877 D.A

William Mason was the Colt gun designer behind the legendary model 1873 "Peacemaker", the "New-Line" series of pocket revolvers, which included the "House" &  "Cop & Thug" model pictured here, as well as the Model 1877 double action revolver, pictured below, on the right,  which was Colt's very first double action revolver.