Three parts of four-piece bronze mold for top of pot or jug, cast molding tools tools base metal bronze, cast turned Four-piece bronze mold for casting top of pot or jug top, Rotterdam tin foundry tin pewter Mews Druy craft Forms come from the originally 18th century Rotterdam tinnegieter J Druy. The large molds that were not signed or dated were the property of the tinker guild and were rented to the small tin caster.