Japan 1931 (S6) 50 sen
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This type was struck in Tokyo 1928-38. The fifty sen was 13.48 g until 1905, then 10.13 g during 1912-17, then 4.95 g during 1922-38 and brass thereafter.
Recorded mintage: 27,677,501.
Specification: 4.95 g, 0.720 fine silver, 23.8 mm diameter.
Catalog reference: KM-Y50.
- Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1901-2000, 47th ed., Iola, WI: Krause Publications, 2019.
- The Catalog of Japanese Coins and Banknotes, Tokyo: JNDA (Japanese Numismatic Dealers Assn.), 2014.
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