Four-piece cast iron mold for top of pot or jug, mold casting tool tools equipment metal_metal cast iron, cast turned Four-piece cast-iron mold for casting the upper part of pot Rotterdam tin foundry tin stain tin Meeuws Druy craft Shapes are 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.