This medal is a Patron Saint of Artillerymen. Lightning, explosion, and powder-makers are the fine markings of this fine medal. Made of white bronze. The gunners of the 17th century adopted St Barbara as their patron Saint because of the questionable reliability of their own cannons. To this day Artillerymen revere her selfless sacrifice and dignified service, December 4th marks the anniversary of the martyrdom of Saint Barbara, Patron Saint of the Artillerymen.