bearing, on reverse, perf.12½ (rough) 3ca. tied by Peking seal in blue with "I.G. OF CUSTOMS/PEKING" c.d.s. alongside plus Customs Tientsin and Customs Shanghai c.d.s., front with Japan Koban 5s. cancelled by small "I.J.P.A./SHANGHAI" type II c.d.s. with Yokohama c.d.s. alongside; a couple of small imperfections, good. Photo" /> cover 1889 (28 Mar.) opened out envelope to U.S.A.<I> "via San Fransisco"</I> bearing, on reverse, perf.12½ (rough) 3ca. tied by Peking seal in blue with "I.G. OF CUSTOMS/PEKING" c.d.s. alongside plus Customs Tientsin and Customs Shanghai c.d.s., front with Japan Koban 5s. cancelled by small "I.J.P.A./SHANGHAI" type II c.d.s. with Yokohama c.d.s. alongside; a couple of small imperfections, good. Photo | Christie's