Hong Kong. (Treaty Ports). 1906. Picture post card of 'Marchand Arabe' addressed to Northumberland bearing Hong Kong SG 78, 4c purple/ red tied by Tientsin/ Br. P.O. double ring 'Dec 9th' (Webb Type A), routed via Shanghai B.P.O. with transit 'De 13 06' (Webb Type J). Very fine.