Left breech end of barrel marked with "V/P/eagle head" proofmarks, "US/MODEL/1884" marked low arch breechblock, American eagle with shield next to "U.S./SPRINGFIELD" on the lock plate, boxed script "SWP/1888" final inspection cartouche of Samuel W. Porter stamped on the left stock wrist, circled script "P" proof stamp behind the lower tang, blade front and Buffington ladder rear sight, two-piece trigger guard and trigger bar assembly, serrated trigger, iron cleaning rod, and smooth buttplate marked "US" on the heel.