Scarcity Scale
1 dot is common. 5 is extremely rare.
Army Staff College
Graduate Badge
陸軍大学卒業徽章
Army Academy Graduate Badge. Awarded to officers.
Established on Meiji 28 [1895] August 24.
Abolished on Showa 11 [1936] May 1.
Replica. .925 Silver
Post-war Self-Defense Forces cuff links, I think.