This firing mechanism or gun lock is from a 32 PDR (Pounder) Cannon. The navy locks recovered from the Cairo are the type patented by E. Hidden. The gun lock was designed to ignite the charge by the blow of a piece of metal known as the hammer.
Brass. L 16, Hole Dia 1.1 cm
3201 Clay Street Vicksburg,Mississippi 39183
Vicksburg National Military Park