20 GAUGE PINFIRE 2 1/2″ LT. BLUE PAPER NEW PRIMED EMPTY CL C 20 * L *

For additional context and deeper study, see Aaron Newcomer ’s research on early cartridge systems, including extensive documentation of pinfire cartridges . More examples, high-resolution photography, and long-form articles on the pinfire system and its development are also available through the Lefaucheux Museum .