20th CENTURY MAIL; Small group with 1923 printed matter env. to London franked 4c + 1c tied by Chengfu cds, 1925 reduced env. to Scotland franked 10c (2), 3c (3) and 1c with Tientsin reg. label on front, c1935 env. to London ex Tsining franked 4c block of six + 1c, 1947 airmail env. to London franked $5 (2), $1000 pair + 3c tied by Shanghai cds, plus a few stamps inc. Taiwan (49 covers/cards + few stamps)Cross Reference: REGISTERED MAIL, INCOMING OVERSEAS MAIL, PRINTED MATTER BY POST, AIR MAIL COVERS (Image)