This coupon is a 1980 coarse grain coupon (liangpiao) issued for 10 Shi Jin (approx. 5 kg) in Chongqing County, China. Used during China's planned economy era, these rations were mandatory alongside cash to purchase food staples like corn or millet. Today, it survives as a historical collectible reflecting the country's mid-to-late 20th-century food distribution system.
