This desirable Navy rifle has the early serial number "381" on the upper tang which falls within the correct estimated range for this variation (1-750), and it was previously in the Roy Marcot collection and is pictured along with the included bayonet as the example of this model in his book "Spencer Repeating Firearms" in "Chapter 2: Model 1860 Spencer Navy Rifles." The Navy contract Spencer rifles were the first Spencer repeaters purchased by the U.S. government and are the rarest of the standard Civil War issued Spencers. Only around 803 of these Navy rifles are believed to have been manufactured out of 107,372 Spencer rifles and carbines purchased by the Union. These rifles are based on Christopher Spencer's patent and were among the most advanced firearms used in the war. They fire the .52 caliber 56-56 Spencer cartridges. The barrel has the bayonet lug on the bottom ahead of the long "musket" style forearm which is secured by three barrel bands and has a steel cap, a pinned German silver blade front sight, notch and folding ladder rear sight, and no markings. The top of the frame is marked "SPENCER REPEATING/RIFLE CO. BOSTON, MASS./PAT'D MARCH 6, 1860." The action has the early blade extractor. There are no inspection markings which is not uncommon on Navy issued firearms. The rare Navy model sword bayonet is marked "COLLINS & CO/HARTFORD/CONN" on the left side of the blade, "1861" on the right, and "193" on the pommel and has a just over 20 inch long blade, brass hilt, and a leather scabbard with "U.S.N.Y./BOSTON" (U.S. Naval Yard Boston) marked frog.