1 Yen 1955 (30) - 1989 (64) (一 円 )

Japonia - Japan - 日本国 (Nipponkoku)

1965 (Shōwa anul 40 - 昭和四十年) Tiraj - Mintage - 1 743 256 000

1980 (Shōwa anul 55 - 昭和五十五年) Tiraj - Mintage - 1 145 000 000

1988 (Shōwa anul 63 - 昭和六十三年) Tiraj - Mintage - 1 268 842 000

Număr catalog - Catalog Number ~ Y#74  
Material ~ Aluminiu - Aluminum
Diametru - Diameter ~ 20,00 mm
Masă - Weight ~  1,000 g 
Tip muchie - Type Edge ~ Netedă - Plain