Manufactured from 1876 to the 1880s, these large frame single action revolvers were also known as the "Army Revolver". This early model features an open top frame, round barrel, scooped cylinder flutes, sliding loading gate and bird's head butt with provisions for a lanyard. The front sight is a blade integral to the barrel, and the rear sight is a "V" notch just ahead of the hammer on the frame. The left side of the barrel has the one-line Hopkins & Allen address marking, and the top of the barrel has the one-line Merwin Hulbert address/patent information. The frame is marked "CALIBRE/WINCHESTER 1873", the designation for 44-40 caliber, on the left side. The serial number is stamped on the butt, and the assembly number "888" appears on the cylinder, barrel lug and left side of the frame under the grip.