cover 1943-45 Jiaodon, handstamped "Chiao Tung" on Shantung 2nd Wartime Posts 5c. on 1c. vermilion (violet surcharge) vertical pair on 1945 (Oct.) XU5 from Weihaiwei to Tientsin well tied by bilingual c.d.s. and showing an instructional label applied on arrival stating the the postal service has been interrupted and that the letter is being returned to sender. Very fine and probably unique. Yang EC 162b. Photo