This is an antique Japanese military sake cup, decorated with a Chinese city gate with a Japanese flag and some planes flying overhead. The exterior of the cup is in the shape of a helmet with the words "Loyalty and Bravery" embossed on it, and the words on the inside are "Victorious Return Commemoration"

Condition: Mint. On the outside there's a spot on the glaze around 11 o'clock

Size: 2" across