cover -- 1900 (11 Dec.) opened out envelope, registered to "Austria via HKg & Italy" bearing, on reverse, "C.I.P." 20c. tied by bilingual c.d.s. with a second strike on the front with handstruck "R", Hong Kong 20c. on 30c. with a fine strike of the "I.P.O." tieprint and Hong Kong c.d.s.; fresh and attractive. Photo