Sweden. Military postal stationary **, The Swedish Åland Detachement 1918. The coupon "Kvitto å tjänstefrankotecken" with the very rare military unit cancel "Kungl. Göta Livgarde. 8 kompaniet" with which a person at home could exchange for a envelope with free postage to the Swedish military at Åland. Excellent quality and super rare postal history exhibition item!