Cuba
Provisional Republic copper Proof Pattern 5 Centavos 1870 P-CT Proof AU Details (Improperly Cleaned) NGC, Potosi mint, KM-X1a. Well detailed with little actual wear on the raised devices and light, not too distracting, hairlines mostly visible on the reverse. The rarest denomination among the series of copper 1870 patterns, eminently collectible despite the defects noted on the insert.
Estimate: 3000-4000 USD