Netherlands, Province of Friesland (1581-1795). Gold Ducat (Gouden Dukaat) 1640/ 30 (overdate clearly visible), CNM 2.16.14, Delm. 1013 (R3), but does not note date ovestruck!, HPM Fr 11, Jasek 15, VH&S 1476 (R4), Gold 24 mm, weight 3,50 g., Condition aXF/VF+, slightly bent, fragmentary weakly struck, local dent, patina, nice relief details, very rare date, not found on the market.

Both varieties of this date with the overstruck date 1640/30 as well as the regular minting 1640 are among the extremely rare, unlisted on the world auction market.