cover 1941 (July) pair of censored airmail XU5 (one roughly opened at right) to England bearing interesting frankings (25.7) with Japanese Occupation of Hopei Sun Yat-sen series 3 (Chung Hwa Print) $2 comb perf. vertical imprint pair and single, and (7.7) bearing similar $5, together with series 4 (Dah Tung Print) 50c. and Martyrs 40c.; a rare and interesting pair. Photo