This interesting ring pistol was designed and manufactured by master gunsmith Francis C. Lebeda. It uses a percussion system and is convertible from an over/under style derringer to a five shot revolver. The over/under barrels are capable of firing a .240 caliber round ball using a number 209 primer. This ring pistol also features light engraving on the left side, bottom, and top. The included revolver cylinder uses .177 caliber balls. Included is a black fabric covered case. A plaque on the case has the family history of master gunsmith Francis C. Lebeda.