Vintage Shanghai Tang Mao Tse Tung waving chairman wind up watch

Vintage men’s Shanghai Tang Mao Tse Tung waving chairman wind up watch . Mechanical works great but you must wind it no batteries . Waving action as well as red star on second hand very unique and collectible. Genuine leather band see pictures shows some wear on band as well as scratches on back plate . Approximate measurements shown in photos as well . Chinese writing on back not sure maker . Quality watch with some weight to it . DO NOT overwind once receiving this recommendation of winding is 10-15 gentle winds