Springfield Trapdoor First Model 1873 Rifle .45-70 caliber 32.5" round barrel S/N 47784. Lockplate marked with eagle and U.S. Springfield and dated 1873; hammer with coarse knurling.? Barrel with small eagle and VP proofs.?Breechblock marked Model 1873 with eagle and crossed arrows and U.S.; high arch breechblock.?Correct first type ramrod...