China 1948-49 'Chinese Postal Administration, Guangdong Posts & Telegraphs' $100 on $4f yellow-olive surcharge error, SG NE53aChina 1948 (Nov) 49 Chinese Postal Administration, Guangdong Posts & Telegraphs' $100 on 4f yellow olive, error surcharge inverted, surcharged type NE19, SGNE53a, Yang AD48a. A fine used example and the only used example we have ever encountered of this major Chinese rarity. A very rare inverted surcharge error as only one sheet of 100 originally existed. Stanley Gibbons catalogue value: 4,500 (for mint examples) with used examples not priced in the