United Kingdom. Carlos IV. 8 Reales 1792 Mexico FM (countermark George III)

Spanish colonial silver 8 reales coin from 1792. Issued under King Charles IV (Carolus IIII). This specific type-1 Mexico 8 Reales coin bears an oval countermark featuring the portrait of the British king George III. Historical Context: Countermarks like these were used by the Bank of England during a shortage of silver coins (emergency issue) around 1797, causing the Spanish dollar to circulate as legal tender in Great Britain. 26.30 gram silver coi

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