cover CHINAI: 1899 (7 June) opened out envelope addressed to London bearing "C.I.P." 10c. tied by "CHINHAI" bilingual c.d.s. with Hong Kong 10c. purple on red cancelled by a fine strike of the Ningpo "I.P.O." tieprint and Shanghai c.d.s., backstamped with Ningpo, Shanghai and London c.d.s., scarce. Photo