Sweden. Facit 183, 231 cover, 10+25 öre on air mail cover sent from MALMÖ 1 15.9.31 to Switzerland. The transit pmk BERN LUFTPOST 16.IX.31 have been changed with a new one 17.IX.31. Arrival pmk LANGNAU (ZÜRICH) 17.IX.31. Correct postage 25 öre + air mail fee 10 öre.