People's Bank of China, set of 4x 400 Yuan, 1979, 'Tiananmen Square', 'Great Hall of the People', 'Mao Zedong Memorial' and 'People's Heroes Monument', minted for the 30th anniversary of the PRC,graded NGC PF70, PF69 Ultra Cameo, PF70 Cameo and PF69 Cameo respectively (4).
Estimate: 32000 - 38000