This is an antique Japanese military dish, decorated with a map of East Asia, with Japan, Korea, and Taiwan highlighted in red (these were part of the empire) and Manchukuo in a special orange outline. The war with China was raging at this point already with much of the coast conquered. The guy on the horse is Kusunoki Masashige, a samurai from the 14th century whose statue is outside the imperial palace (in fact, this design is from that statue). He is seen as embodying the samurai spirit so that's why he's on the dish. There's a small battleship at the bottom next to the waves, and on top is the big word "Award" and an anchor. These white elements - the statue, waves, and the word "Award" are all in relief. 

The back of the dish has the words "Showa 14th Year Navy Test Award". These were annual tests of skills and individuals would be rewarded if they did well. The back of the dish also has a faint maker's mark - made by Hattori. And there are two holes in the bottom with a rope attached, which is meant for hanging on a wall.

Condition: Mint

Size: 7.5" across