Lefaucheux Model

Leet’s factory also made unusual pinfire cartridges that were needed for the Lefaucheux Model 1854 revolver made in France. The U.S. Army had some 10,000 of those revolvers in its inventory when the war began. When the trigger was pulled, the hammer drove the brass pin that contained an explosive mixture. (Heritage Auctions, Dallas)

Heritage Auctions, Dallas