Japan Imperial Sea Post. 1935 (July 11), Trans-Pacific MV ''Asama Maru'' cover to Danbury, CT, franked by three values, paying postage of 10s, tied by two red brown illustrated ''11.7.1935'' ds, blue three-character ''To US'' marking, opening instructions is on reverse, fresh and VF, Est. $150-$200 (Image)

Japan Imperial Sea Post. 1937 (February 13), Trans-Pacific MV ''Chichibu Maru'' cover to Canada, franked by five(!) definitive stamps, paying 10s for postage, tied by three red brown ''2.13.1937'' date stamps, blue four-character ''To Canada'' marking, opening note on reverse, fresh and VF, Est. $150-$200 (Image)

Japan Imperial Sea Post. 1936 (April 28), Trans-Pacific MV ''Heian Maru'' cover to Vancouver, Canada, franked by four stamps, tied by two red brown ''28.4.1936'' illustrated date markings, blue four-character ''To Canada'' handstamp, opening remarks on reverse, neatly opened at top, VF, Est. $150-$200 (Image)

Japan Imperial Sea Post. 1936-39, Trans-Pacific MV ''Heian Maru'', three covers, one to Canada, two to US, franked by three or four stamps, cancelled by similar red brown illustrated date stamps, four or three-character markings in gray blue (''To Canada'' or ''To US''), opening notes on reverse, VF, Est. $400-$500 (Image)

Japan Imperial Sea Post. 1935 (February 7), Trans-Pacific MV ''Hikawa Maru'', cover to Canada, franked by four adhesives, paying 10s postal charge, tied by two red brown ''7.2.1935'' illustrated postmarks, blue four-character ''To Canada'' handstamp, opening remarks on reverse, neatly opened at bottom, fresh and VF, Est. $150-$200 (Image)

Japan Imperial Sea Post. 1934 (February 22), Trans-Pacific MV ''Hiye Maru'', cover to Milwaukee, franked by two stamps, met altogether 10s postal rate, tied by two red brown ''22.2.1934'' illustrated date stamps, blue three-character ''To US'' marking, opening remarks on reverse, slightly creamy corners from holders on the back only, still VF, Est. $150-$200 (Image)

Japan Imperial Sea Post. 1934 (October 25), Trans-Pacific MV ''Tatsuta Maru'', cover to California, franked by Red Cross set of three values, paying postage of 10s, tied by two red brown ''25.10.1934'' special markings, gray blue three- character ''To US'' handstamp at left, opening remarks on reverse, fresh and VF, Est. $150-$200 (Image)