Original Civil War U.S. Army issue cavalry carbine boot/socket. Socket of thick sewn leather with leather strap and black japanned buckle stitched to the outside. Excellent and very solid condition. The strap itself is near perfect. Inspector’s initials: “E. METZGER / PHILA.”. These were buckled to the D-ring on the lower right side of the saddle. When riding the trooper carried his carbine suspended from the carbine sling over his shoulder with the barrel pointing down and thrust through the socket to keep it from swinging wildly around while the horse was in motion. A key piece to any Civil War cavalry collection.