Japanese flag, with autographs in Chinese, captured in New Guinea

Japanese national flag with separately sewn in hinomaru (red disc). There are numerous autographs written in black ink as well as printed red seals. These are all written in Chinese. The signatures in a radial pattern around the hinomaru are all by students of Yaoguantun Primary School. There are additional signatures by a chief of police and a schools inspector. The seals are those of these last two individuals and of the primary school itself. The flag appears to have been presented either to a Chinese national working for the Japanese army or to a teacher of Japanese at the school.