cover PERTAIHO: 1899 (12 June) envelope addressed to London bearing, on reverse, "C.I.P." 10c. tied by Peitaiho bilingual c.d.s. with a second strike alongside with Taku and Shanghai c.d.s., the front shows Hong Kong 10c. purple on red cancelled by the second type Tientsin "I.P.O." tieprint and Shanghai c.d.s.; light tone spotting and tears to the flap, scarce