0verall: 41.9 x 61.3 x 72.9mm (1 5/8 x 2 7/16 x 2 7/8 in.)
According to the label affixed to this piece, it is a fragment from the COnfederate vessel Merrimac, which was defeated by U.S.S. Monitor in 1862.
Gift of the Naval History Society, 1925
Due to ongoing research, information about this object is subject to change.