ca. 1870-73, Two US-franked covers sent from Japan, the first franked by 1870-71 10¢ brown Jefferson, canceled by crossroads cork cancel of the Japanese Post Office in Shanghai, on cover to Brooklyn, N.Y. (7.22), showing "San Francisco/Steamship" c.d.s. (7.14) adjacent, the second franked by 1873 10¢ brown (#161), canceled by cork type on envelope from Yokohama to Portsmouth, N.H., via San Francisco (12.17), showing "Yokohama/Japan" origin c.d.s. (11.20) adjacent, with central vertical filing fold and small tear at top of cover, Fine to Very Fine.