Borman Brass Underplug

For your consideration one brass underplug for a Borman cannonball…these are almost always made from iron. This underplug is in excellent dug condition. A deep green patina can be seen. Dirt can still be found on this plug. The threads are crisp & clean & would easily screw into a cannonball today & could be fired back at the South once again! Measures about 1.0 inch tall x 0.37 inches thick.