Antique Japanese Military 1920 Air Unit Commemoration Army Sake Cup
This is an antique Japanese military sake cup, decorated with the word "Congratulations" in the center and a star. The words on the outside are "2nd Air Battalion 2nd Turnaround Commemoration" and "Taisho 9th Year November 11th". I'm not entirely sure what this was for - but this would be a very early period in Japanese military aviation, this is probably for some kind of maneuver testing at the time.
Condition: The edge is a bit rough at around 10 o'clock
Size: 2" across