Wiki - Japan - World War I Victory Medal.
Established in 1920, commemorating the victory in WWI.
It was awarded to all participants in the operations during the years 1914-1920 as well as in other allied countries.
The medal is bronze, with a diameter of 30.3 mm. The case is made of unlacquered wood.
Obverse:
Reverse:
See japanese decorations in the online store