Four-piece bronze mold for top of spreader, cast molding tool tools base metal bronze, Four-piece bronze mold for casting top of spreader on core, for example, Rotterdam tin casting tin tin Meeuws 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.