International letter with perfin “K” in the stamps. The letter is franked correctly with 4 x 10 øre = 40 øre, which was the rate for international letters 15 to 125 g to Sweden in the period from July 1st 1920 to May 31th 1922. The stamp is cancelled May 6th 1921 with a whole letter cancellation machine Tp. SP. 4H. * *. Bro II.