Japan holey coins

Rulers
Emperors
Mutsuhito (Meiji)1867-1912, years 1-45
Yoshihito (Taisho)1912-1926, years 1-15
Hirohito (Showa)1926-1986, years 1-64
Akihito (Heisei)1989-, years 1-
Y# 43Taisho 6-9 (1917-1920)5 sencopper-nickel
Y# 44Taisho 9-12 (1920-1923)5 sencopper-nickel19.1mm
Y# 48Showa 7 (1932)5 sencopper-nickel
Y# 53Showa 8-13 (1933-1938)5 sennickel
Y# 57Showa 13-15 (1938-1940)5 senaluminum-bronze
Y# 63Showa 19 (1944)5 sentin-zinc
Y# 45Taisho 9-12,14,15 (1920-1923,1925,1926)10 sencopper-nickel
Y# 49Showa 2-4,6,7 (1927-1929,1931,1932)10 sencopper-nickel
Y# 54Showa 8-12 (1933-1937)10 sennickel
Y# 58Showa 13-15 (1938-1940)10 senaluminum-bronze
Y# 64Showa 19 (1944)10 sentin-zinc
Y# 72Showa 24-28,32,33 (1949-1953,1957,1958)5 yenbrassold script
Y# 72aShowa 34-64 (1959-1989)5 yenbrassnew script
Y# 96.1Hesei 1 (1989)5 yenbrassobv: inscription and date separated by seed leaf. Japanese character first in date. rev: gear aroung hole, rice stalk above denomination
Y# 96.2Hesei 2-11 (1990-1999)5 yenbrass
Y# 76Showa 34-41 (1959-1966)50 yennickel
Y# 81Showa 42-63 (1967-1988)50 yencopper-nickel
Y# 101.1Hesei 1 (1989)50 yencopper-nickelobv: Japanese character first in date
Y# 101.2Hesei 2-11 (1990-1999)50 yencopper-nickel

Leprosarium coinage

Nagashima-Aisei En 1931-1948

KM# l1NDsenjapanned (lacquered) brassUniface, badge of Aisei En above denomination
KM# l3ND5 senjapanned brass
KM# l4ND10 senjapanned brass
KM# l4aND10 senjapanned aluminum

Patterns

KM# pn34Meiji 41 (1908)sencopper
KM# pn44Taisho 5 (1916)5 sencopper-nickel
KM# pn83Showa 25 (1950)10 yencopper-nickel
KM# pn86Showa 33 (1958)5 yenbrass

2004 standard catalog of WORLD COINS by Chester L. Krause and Clifford Mishler
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