Sweden
Oscar I Proof 1/2 Riksdaler 1845-AG PR64 NGC, KM666. Plain edge. A gorgeous coin with frosted devices and reflective surfaces. Very rare when certified as Proof, and quite eye-appealing due to its glassy fields, which carry aged blue-green undertones.
Ex. "Colonel" E.H.R. Green; Green Estate' Partnership of Eric P Newman / B.G. Johnson.
https://coins.ha.com/itm/sweden/sweden-oscar-i-proof-1-2-riksdaler-1845-ag-pr64-ngc-/a/3075-32383.s?type=CoinArchives3075
HID02906262019
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Estimate: 2000-3000 USD