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guinea

ギニー　—　Names of money

An English gold coin, named after the gold of Africa.

Guinea GuineaAD 1663–1814
A photograph of the real thing this term names.

⚠ Because the relative value of gold and silver fluctuated, its exchange rate against silver coins remained unfixed for a long time. The difficulty of bimetallism is manifested in the fluctuating value of this single coin.