Also known as the Second Model Allin Trapdoor, this rifle is a post Civil War breechloading alteration of Springfield Rifle-Musket for use with the .50 caliber centerfire cartridge. Correct "1864" dated lock and "1866" dated breech block. Boxed script "HSH" inspection cartouche stamped on left stock flat.

Very good with traces of original finish, gray and brown patina and some light pitting. Stock is fine, with a small crack ahead of the rear lock stock screw and a few light handling marks, and defined edges and markings.