An archaic bronze ritual food vessel, pan Eastern Zhou dynasty, Spring and Autumn Period 東周春秋　青銅盤

The interior is later inscribed in the Eastern Han dynasty with the characters zhongping sannian, the third year of Zhongping, corresponding to A.D. 186.
盤內於東漢中平三年（公元後186年）後加《中平三年》銘文。