Sweden
Oscar II gold Proof 20 Kronor 1901-EB PR64+ Ultra Cameo NGC, Stockholm mint, KM765 (unlisted in Proof), AAH-22, SGM-26 (no Proofs recorded). Extremely rare in this Proof format and only the second such specimen we have encountered, with even Delzanno's recent work on Swedish gold coins recording no sales results for Proof strikings. One of a total of just three Proofs from Oscar II's 20 Kronor series certified by NGC across all dates, we note that a PR64 piece brought $8400 in our recent April Signature auction.
Ex. Mortimer Hammel Collection (Stack's September 1982, Lot 644)
From the Caranett Collection
https://coins.ha.com/itm/sweden/sweden-oscar-ii-gold-proof-20-kronor-1901-eb-pr64-ultra-cameo-ngc-/a/3085-30313.s?type=CoinArchives3085
HID02906262019
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Estimate: 5000-7000 USD