1941 "MAIL SERVICE SUSPENDED" in blue on cover with #231 3¢ Mufti tied by Hamilton (DEC 11 1941) machine cancel, to Hong Kong, China, with censor tape. Reverse with blue rectangular "Inspection Division Dead Letter Office JAN 7 1942 No. 8 Ottawa Canada". The cover was mailed during the Battle of Hong Kong (Dec 8-25, 1941). (Image)