This relatively uncommon, business(liquor(?)) cover(w/clean front, but some stains at the back; top, right corner of the envelope removed, too) was sent from Keijo, Korea(then occupied by the Japanese), to Kaesong, Korea, on August 5, 1936! The yellow green, 2-Sen Japanese definitive is in very fine condition! The CDS from the Keijo P.O. is superb! Noted imperfections aside, this remains a nifty piece of Korean and Japanese postal history!