Netherlands
Beatrix gold Proof Ducat 1985 UNC, KM190.1. Sold with official mint holder and COA.
https://coins.ha.com/itm/netherlands/netherlands-beatrix-gold-proof-ducat-1985-unc-/a/61294-25302.s?type=DA-DMC-CoinArchives-WorldCoins-61294-10302022
HID02906262019
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