Two-piece bronze mold for lid of butter pot, cast molding tool tools base metal bronze iron, cast turned Two-piece bronze mold for pouring lid for butter pot Rotterdam tin foundry tin pewter Meeuws Druy craft Forms originate from the 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.