Analysis of information sources in references of the Wikipedia article "5 yen coin" in English language version.
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ignored (help)and possibly some were struck in 1871, meiji 4, but we have not been able to find any bearing this date.
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ignored (help)But when America lifted her gold embargo in June, 1919, Japan soon began to import gold heavily. And this naturally reenforced the gold reserve of the Bank of Japan. It had been the opinion of government officials that no inflation could take place so long as the percentage of gold cover had not been lowered.
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