Japan Imperial Rising Sun Flag, Edo to WW2 Ping Pong Ball

The Rising Sun Flag is a Japanese flag (???, Kyokujitsu-ki) that consists of a red disc and sixteen red rays emanating from the disc. Like the Japanese national flag, the Rising Sun Flag symbolises the sun. The flag was originally used by feudal warlords in Japan during the Edo period. It was used up until the end of the 2nd World War. This work is in the public domain in Japan according to Article 13 of the Copyright Act of Japan.