This is an antique Japanese military sake cup, decorated with the naval insignia on the front. The words on the back are "Award - Military Merit Person". Inside the base ring are the words "Pure Silver, Made by Koya". The Japanese mark for pure silver is pretty high purity - higher than sterling. The cup weighs about 95g - more than 3 ounces of silver.

Condition: Excellent - slight surface scratches

Size: 4" across