International registered air mail letter to some countries in Europe (category Ia) 5 < 10 gr.
Postage rate 30 öre, registered mail fee 20 öre and air mail fee 40 öre
Registered mail label type 4:1, currency control label and a label stating that the letter
was part of the cargo on a plane that crashed in Sweden on its way to England
06/05/42 - 28/02/45