Italy
Sicily. Ferdinand IV Oncia (30 Tari) 1791 GL-CI AU Details (Reverse Cleaned) NGC, Palermo mint, KM221, Dav-1420, MIR-597 (R2), Spahr-2. 68.23gm. A heavily medallic specimen that has developed a rich iridescent cabinet tone over both sides despite the noted cleaning, with the reverse preserving mint luster and intensive die polish. Heavily medallic throughout, we note for the sake of accuracy that it appears that the obverse, and not the reverse, has been cleaned.
From the Amsterdam Collection
https://coins.ha.com/itm/italy/sicily/italy-sicily-ferdinand-iv-oncia-30-tari-1791-gl-ci-au-details-reverse-cleaned-ngc-/a/3085-30232.s?type=CoinArchives3085
HID02906262019
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Estimate: 3000-4000 USD