Justice rifle muskets are described in depth on pages 365-375 of George D. Moller's book "American Military Shoulder Arms Volume III", with this exact rifle photographed on page 372 and 373. Manufactured by P.S. Justice of Philadelphia with approximately 2,174 total rifle muskets of several configurations delivered under Federal contract between September 1861-February 1862. Features a brass blade front sight and square bayonet lug on the bottom of the muzzle end of the barrel, 500 yard folding three-leaf rear sight, brass end cap, three brass clamping-type barrel bands, a distinctive brass trigger guard with double curve profile, brass butt plate, and Sharps type patch box. The barrel has a brown finish, the lock and rear sight are blued. The steel ramrod has a straight shank with tulip head. The top of the barrel is marked: "P.S. JUSTICE/PHILADA" in two lines behind the rear sight. The same markings are on the lock plate. Includes a US socket bayonet, leather sling, and wood tampion. Provenance: The George Moller Collection