Sweden. 1848, military prephilately. The Danish-German War (1848–1851). A lovely letter from the Swedish volunteer Lieutenant August Duse in the Danish Army, dated Drabeksmöllan 5 July 1848 via the Danish Field Post system and Royal Mail via Helsingborg to Wadstena, Sweden. Red seal on back. Surcharged with only half the rate in blue as Danish Field post was free of charge in Denmark. Transit cancel "KÖBENHAVN" 9.7.1848 and surcharge cancel unpaid from Denmark Helsingborg 10 July 1848. Listing letter chart nr 1 from Helsingborg to Wadstena. Full content is transcribed and also facts is on on a page. Excellent quality and a true postal history exhibition item!