The Model 1840 was the last flintlock musket manufactured by the Springfield Armory between 1840-1844, and 26,841 of the 30,421 were converted to percussion between 1849-1851, and more converted after, making examples in original flintlock configuration exceedingly rare. Only an estimated 25 remain in original flintlock configuration. Various parts inside the lock are marked with single digit and letter markings. An "eagle/US" mark is at the center of the lock and "SPRING/FIELD/1842" on the tail of the lock, "V/P/eagle head" proofs on the left of the breech above, "NH" marked on the left barrel flat, "1842" dated barrel tang, oval script "BH" inspection cartouche on the left flat, and "US" on the buttplate tang. Includes a US socket bayonet and brass tipped leather scabbard with white buff leather frog.