Sweden. Military Facit M79, 80 cover, The Swedish Åland Demolitions Detachement 1919. A nice cover machine-cancelled "STOCKHOLM 1" 30.4.19 on nice mounted page to a a Swedish officer at Åland. The Swedish military forces had a cover address Stockholm 30. Arrival cancel "STOCKHOLM 1" 30.4.19. There is also a full letter content. Rare and fine quality!