"1863" dated tail of the lock, Federal Eagle and "U.S./SPRINGFIELD" at the front of the lock, non-visible barrel markings.

Manufactured in 1832. Approximately 5,700 of these rifles were originally manufactured by Simeon North between 1830-1836, but relatively fewer have survived. "U.S/S.NORTH/MIDLtn/CONN./1832" marked on the breech block.