American-made, reloadable, patented, pinfire shotshell by William H. Smith of Charlestown, Massachusetts

Cartridges | Cartouches & Accessories
1

This is one of the very few American-made pinfire shotshells. It was patented on February 8, 1870 by William H. Smith of Charlestown, Massachusetts.

Patent drawings and some more commentary are in the little article linked above.