Sweden. Military postal stationary Facit Mu1 , The Swedish Åland Demolition Detachement 1919. A nice military letter with a lovely two row rubber cancel in lilac "ÅLÄNDSKA DEMOLERINGS- DETACHEMENTET" (an official unit cancel) on back. Cancelled "STOCKHOLM 1" 1.8.19 when the mail arrived from Åland. Ex. H. Hohndorf. Very nice quality and a postal history exhibition item!