China (People's Republic), 1980, 8f-70f Great Wall, complete sheets of 12, o.g., never hinged, Very Fine and rare set of sheets. Scott No. 1626-1627  $1,500. These stamps were sold at exhibitions of the People's Republic of China in San Francisco, Chicago and New York from Sep. to Dec., 1980. Sheet of 12 were only sold at the U.S. exhibitions at increasing prices. $0 (Image)