Japan 100 Yen Showa Reign 51( 1976)

 Japan 100 Yen Showa Era

The 50th year of the Emperor Shōwa (Hirohito) on the throne

Nominal Value	Metal	Weight	Diametr	Mintage         Year
100 Yen	Copper-Nickel	12 g	30 mm	70 000 000      51(1976)

Emperor Shōwa  was the 124th Emperor of Japan according to the traditional order of succession, better known outside of Japan by his personal name Hirohito, in Japan, he is now referred to primarily by his posthumous name Emperor Shōwa.

The word Shōwa is the name of the era that corresponded with the Emperor's reign, and was made the Emperor's own name upon his death. The name Hirohito (裕仁) means "abundant benevolence".
On December 25, 1926, Hirohito assumed the throne upon his father, Yoshihito's, death.
The Crown Prince was said to have received the succession.
The Taishō era's end and the Shōwa era's beginning (Enlightened Peace) were proclaimed.
The deceased Emperor was posthumously renamed Emperor Taishō within days.
Following Japanese custom, the new Emperor was never referred to by his given name,
 but rather was referred to simply as "His Majesty the Emperor" which may be shortened to "His Majesty".In writing, the Emperor was also referred to formally as "The Reigning Emperor".
The reverse is the emblem of the Imperial Standard as Emperor

source : wikipedia/own