采铜尖兵 Cai tong jianbing Designer Wu Yunhua (吴云华) Date 1972-1975 Publisher Publisher unknown Size 38x32 cm. Call nr. BG D24/778 Collection IISH collection Notes The impressum states this is a collective creation, 'written' by Wu Yunhua (集体创作 - 吴云华执笔).The original painting is from 1972. Link to IISH catalog https://search.iisg.amsterdam/Record/904539
