The Eureka projectile
was manufactured by the American Projectile Company in New York and was test fired by the
Washington Arsenal as early as May 17, 1864. The brass fuze has a screwdriver slot
and spanner holes. Stamped near the fuze are the letters "JH." The
brass sabot consists of a concave disk and a short cylindrical cone attached to the base
of the projectile with a combination of rivets.
