This very early production Springfield Model 1873 carbine was manufactured circa 1874. The rear sight has the early stepped pattern base graduated to 500 yards and the sight itself is graduated to 1,100 yards. The high arch breechblock has early distinctive markings of "MODEL/1873/[eaglehead/crossed arrows]/U.S." The lock plate is stamped with the eagle along with "U.S./SPRINGFIELD/1873" ahead of the hammer. The barrel, correctly, does not have the "V/P/Eagle Head" proof and inspection marks applied to rifles and carbines in the 40-60,000 serial range that were manufactured in Fiscal Year 1875. The left side of the long wrist stock has a script "ESA" oval cartouche and a circled script "P" proof is stamped below the trigger guard finial. The left side of the buttstock has an old "ML/45". The barrel band is later solid type without sling swivel; instead, there is only a stacking swivel. The carbine half stock is fitted with a buttplate correctly without a trap and is marked "US" in front of the upper screw. A sling bar with ring is mounted on the left side of the stock.