Scott #K1 issued in 1919. From Scott: 'Postage stamps of the 1917-1919 series were issued to the U.S. Postal Agency in Shanghai, China. These stamps were used as prepayment on mail dispatched from the U.S. Postal Agency in Shanghai to addresses in the U.S.' This is a Used stamp with a 2008 PF graded certificate. Grade: PF GRADED XF 90 "USED" "IT IS GENUINE". This is a very nice stamp, lightly cancelled with excellent centering!
