The 1889 Imperial Constitution Promulgation Commemorative Medal was established in that year to 
celebrate the first constitution of Japan.

The gold medal was awarded to Imperial princes and the silver to people of chokunin or sonin rank. 
The women's version has a bow ribbon.

OBVERSE: Imperial mum above the Imperial throne
REVERSE: Inscribed 'Meiji 22 [1889] February 11, Great Japanese empire Constitution Promulgation 
Medal.'