Springfield Trapdoor Serial Number Lookup Official

| Model | Approx. Serial Range | Production Years | Notes | |-------|----------------------|------------------|-------| | Model 1865 (Allin) | 1 – 5,000 | 1865–1866 | Very rare; conversions from muzzleloaders | | Model 1866 (Allin) | 5,001 – 32,000 | 1866–1867 | “Second Allin”; distinct breech | | Model 1868 | 32,001 – 60,000 | 1868–1870 | First with hinged trapdoor | | Model 1870 | 60,001 – 80,000 | 1870–1872 | Rare; short production | | Model 1873 (early) | 1 – 30,000 | 1873–1877 | .45-70 caliber | | Model 1873 (mid) | 30,001 – 150,000 | 1878–1881 | | | Model 1879/1884 | 150,001 – 400,000 | 1881–1889 | Many are 1884 models with Buffington sight | | Model 1888 (ramrod) | 400,001 – 520,000 | 1888–1893 | Last production | | Model 1890 (Cadet) | 200,000 – 300,000 (approx) | 1890–1893 | Smaller stock, no cleaning rod |