Japan 1921 (T10) 5 sen

from the Mountain Groan Collection

This specimen was struck for Japan by the Tokyo mint, which issued this type 1920-23. The coin was converted from silver to copper-nickel in 1887. It was reduced from 4.67 g to 4.28 g in 1917 (Y-43) and then to 2.63 g in 1920 and then made in pure nickel after 1933. The denomination was terminated after 1946, the victim of inflation and the disaster of World War Two.

Recorded mintage: 133,020,000.

Specification: 2.63 g, copper-nickel, 19.1 mm diameter.

Catalog reference: KM Y44.

Source:

• 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.

Link to:

• 1920 5 sen, large
• 1921 sen
• 1921 10 sen
• 1922 5 sen
• Coins and currency dated 1921