HUNAN SOVIET: AE 20 cash, cf. Kann-650k, countermarked su wéi ai (soviet) and hammer and sickle on Hunan Province crossed-flag type, VF to EF on Fine host. According to Kann it is unknown where this type of countermark was applied and there are several small varieties of calligraphy. It is possible it is a fantasy production.

https://www.pf369.cn/jingpin-508869.html
关于 湖南省造双旗嘉禾二十文苏维埃戳记 极美的评论