The banner of the Wuchang uprising (zh:武昌起義) of October 10, 1911, subsequently used as the flag of the army of the Republic of China, ca. 1913-1928. It appears on many varieties of Chinese currency issued during the 1910's and 1920's.
https://www.19111010.com.tw/story?id=93
原作者：共進會（武昌革命黨人、湖北軍政府）；向量化：辛亥武昌首義同志會