1916/1917, IMPERIAL JAPANESE SEA POST, 1s. orange and 25s. olive in combination with Australia 1d. red on registered sea post cover with registration label "Korea Maru" and violet rubber c.d.s. "KOREA-MARU I.J.SEAPOST 15.12.16" to Poerwokerto/Dutch Indies, on reverse "Yokohama transit 12.1.17 and arrival mark. 2.2.17 900유로 경매 시작
