Davidtags Militaria is pleased to offer an original WW2 Imperial Japanese 1940 2600th National Anniversary Commemoration medal in case of issue. 

Nice example.

The 2600th National Anniversary Commemorative Medal was instituted on July 27, 1940 and awarded to those involved in organizing, conducting or participating in the celebrations in November 1940 of the 2600th anniversary of the founding of the Japanese Empire by the legendary Jimmu Tenno in the year 600 BC.