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. Very good, solid condition with almost zero crazing. This one has the initials “J E T” stamped into the strap. Leather is a bit stiff. 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. This is a basic and key piece to any Civil War or early cavalry collection.