.50 caliber, 28″ barrel secured by two bands. The barrel inspected on the left side by the breech ” P/H.B.R.” and anchor on the top. The right side of the receiver marked ” USN/SPRINGFIELD/1870″. The buttstock stamped with “12” near the right side of the butt. Appears to be a commercial sale with the bayonet lug removed and the receiver blued. A repair is evident on the right side of the buttstock next to the uppertang. Very nice bright bore.