1979年中华人民共和国成立三十週年400元金币一组四枚，“天安门”，“人民英雄纪念碑”，“人民大会堂”及“毛主席纪念堂”，每枚含1/2盎士纯金，带原包装与证书，编号21137，评NGC PF69 Ultra Cameo - PF70 Ultra Cameo，#6137434-003，#6137434-002，#6137434-001 及#6137434-004。People s Republic of China, set of 4x gold proof 400 yuan, 1979, 30th Anniversary of the PRC, consisting of Tian An Men , The Monument to the People s Heroes , The Great Hall of the People and Chairman Mao Memorial Hall , each 1/2oz pure gold,graded NGC PF69, PF69, PF69 Cameo and PF70 Cameo respectively, #6137434-003, #6137434-002, #6137434-001 and #6137434-004, with original packaging and certificate of issue, number 21137. (set of 4 gold coins)
