Cuba
Provisional Republic copper Proof Pattern 10 Centavos 1870 P-CT PR64 Red and Brown NGC, Potosi mint, KM-X2a (prev. KM-Pn2A). Tantalizingly watery and exhibiting electric blue patina over watery, fire-red features that brighten within and against the devices.
https://coins.ha.com/itm/cuba/provisional-republic-copper-proof-pattern-10-centavos-1870-p-ct-pr64-red-and-brown-ngc-/p/3093-84007.s?type=DA-DMC-CoinArchives-WorldCoins-3093-10282021
HID02906262019
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Estimate: 960-1440 USD