Four-piece bronze mold for neck of jug or jar with initials JVDP and 1752, mold casting tool tools equipment base metal bronze, cast turned Four-piece bronze mold for casting neck of jug or chamber pot. signed I V D P and 1752 (Jan van de Pol) Rotterdam pewter tin plate pewter Meeuws Druy craft Forms come from the origins of 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.