Overijsselse Steden - Kampen - Dubbele Gouden Dukaat 1655 i.n.o. Ferdinand III (Delm. 1116/R3 / CNM 2.30.15) - 6.94 gram - Obv. Emperor with sword and orb / Rev. MO NOV / AVREA / CIVITA / IMPERI / CAMPEN - XF+ / RRR / extremely rare - ex-Berkman - collectie Coenen