tied by quartered cork with "Washington D.C. Dec 22 8PM" datestamp to 1875 cover to Yokohama, Japan, reverse with large blue "Third Auditor's Office. Dec 22 1875" sender's handstamp and red "Yokohama Paid All Jan 29" double circle datestamp, small faults including upper left corner replaced, very fine appearance, rare example of the short-lived 15c treaty rate