Bullet Mold for an American-made Adams .36 Caliber Navy Revolver by Massachusetts Arms Co. Mass Arms Co. only mfd 1,000 Navy Revolvers 1857-1861 with 600 sold to the US Government. Good condition overall with grey metal turning to patina. Side of mold has some dings in the markings but good clear lettering that is all there in spite of the marks. They read, "MANUFACTURED BY MASS ARMS CO CHICOPEE FALLS". Has dual cavity molds in Fine condition...both for conical shapped bullets. A scarce little mold.