cover PEKING: 1899 (16 Oct.) envelope (flapless) to U.S.A. bearing C.I.P. 5c. pair (some perf. tones) tied by Peking bilingual c.d.s., alongside Koban 5s. (2) cancelled by Shanghai type VII c.d.s. and fine strikes of the diminutive "I.P.O." tieprint, attractive