Spain
Isabel II Proof 20 Reales 1850 PR63 NGC, Madrid mint, KM593.2 (unlisted in Proof), Cay-17187, Cal-592, O'Connor-pg. 119 (R6). An attractive specimen, especially so in Proof format, with Isabel's lightly frosted portrait set against steely, ash-gray low-lying fields, populated by light wisps and flawless legends, the reverse with a general haziness obscuring what would otherwise be a metallic and reflective surface. A treat when seen crossing the auction block, and certain to be a coveted opportunity among connoisseurs of the series.
Ex. Heritage Auction #3021 (January 2013, Lot 22745)
https://coins.ha.com/itm/spain/spain-isabel-ii-proof-20-reales-1850-pr63-ngc-/a/3094-30127.s?type=CoinArchives3094
HID02906262019
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Estimate: 4000-6000 USD