Switzerland
Confederation aluminum Specimen Pattern 10 Rappen 1940-B SP64 PCGS, Bern mint, KM-Pn77, Divo-78. A scarce Pattern production struck in aluminum and displaying marked reflectivity over nearly gem-quality surfaces. Watery in the fields and struck to razor sharpness.
https://coins.ha.com/itm/switzerland/switzerland-confederation-aluminum-specimen-pattern-10-rappen-1940-b-sp64-pcgs-/a/3091-32872.s?type=CoinArchives3091
HID02906262019
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Estimate: 4000-5000 USD