This first experimental postmark is known from Yokohama only. It was
used for a brief period: from June 12 1878 to March 27 1879. It has a 27
mm outer and a 16 mm inner circle and was struck in magenta color. A similar
looking cancellation from Hakodate was reported in the Philatelic Magazine
in 1956. In case it exists it unquestionably is not part of my collection.
|3y1: Cover with a 10 Sen old Koban blue, from Yokohama to Alresford,
|3y2: Cover from Nagasaki to Brooklyn, N.Y., with a 5 Sen old Koban
|3y3: Cover from Yokohama to New York with 3 off 5 Sen old Koban
stamps. This must have been a heavy letter because the rate to the US was
5 Sen per 15g only. The strip of 3 stamps in paper type A have a 12 1/2
I present this letter because the year in the Yokohama mark looks like 1878, but this cancellation was first used on June 12, 1878. The city of Peiking was sailing on March 5 1879 - so I am twice wrong with 1878.
BACK TO MENU