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BIBLIOGRAPHY

Japanese Wikipedia, "10 Sen Coin"

Wikipedia (according to the sources of each article)

Claims Supported by This Source

  1. 1920 cupronickel, 1933 pure nickel (for nickel stockpiling), 1938 aluminum bronze, 1940 aluminum, 1944 tin and zinc.

How to read the verification levels. 'Read' means the material was read in its entirety. 'Bibliography and abstract confirmed' means the bibliographic information and abstract were verified. 'Via course material' means the source was referenced through the main text of a book or a country's monetary history. The text hash is the SHA-256 of the main text from the original source page, excluding tags and whitespace, used to detect if the material has been altered.