.58 caliber. 40" round barrel. SN: NSN. Arsenal Bright finish, color case hardened lock, fire blued small parts, American Black Walnut full-length musket stock. Single shot percussion muzzle loading military rifle musket with the barrel secured by three rounded solid bands retained by springs. Lock marked with a {Spread-Winged Eagle} and US/SPRINGFIELD forward of the hammer and dated 1864 at the tail. Breech with matching 1864 date and left angled breech flat with clear V/P/{Eagle Head} proof marks. Counterpane of stock with two crisp script cartouches, the ESA of Springfield Master Armorer Erskine S Allin and the WPT of arsenal sub-inspector William P Taylor. The gun retains the correct 1864 pattern single leaf L-shaped rear sight with 300-yard aperture in the 500-yard leaf, both sling swivels and a full-length straight-shank tulip head ramrod with threads on the end. A really fine condition and very crisp example of a late Civil War production Springfield Rifle Musket.