cover WHAMPOA: 1901-02, three picture postcards addressed to Hamburg, each bearing Hong Kong 4c. (grey or carmine) cancelled by type 1 or type 2 "I.P.O." tieprint and Victoria c.d.s., each has been sent from Whampoa and shows the bilingual c.d.s., the last cancelling "C.I.P." 4c. (3)