This is an original U.S. Union Army Model 1855 socket bayonet from the Civil War era, paired with a British leather sheath. The bayonet features the classic triangular blade design with an intact socket and locking ring, measuring approximately 18 inches in length. Designed for use with the .58 caliber Springfield rifles—including the Model 1855, 1861, and 1863—the M-1855 bayonet became a staple in Union infantry gear. This example shows a smooth, aged steel patina with light surface wear consistent with its period of use. The accompanying British scabbard adds character and historical intrigue. Leather is lightly worn but in Very Good condition, with brass throat and tip still present. Such combinations were not uncommon, especially in postwar or field-modified gear where practicality often overruled uniformity. This piece comes from the respected Canfield Collection and represents a fine example of a classic Civil War-era bayonet, suitable for any collector of 19th-century military arms and accoutrements.