German States
Frankfurt. Free City silver Proof Ducat 1817 PR63 NGC, KM-Unl. Joseph/Fellner-1016. 22mm. Reformation Anniversary.
https://coins.ha.com/itm/german-states/frankfurt-free-city-silver-proof-ducat-1817-pr63-ngc-/p/61153-11054.s?type=CoinArchives61153
HID02906262019
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Estimate: 200-250 USD