Approximate. 1851, "SCHLESWIG. HOLST: army postal service", oval cancel with date on "K. D. S. " envelope to Itzehoe, on the back official seal "SCHLESWIG HOLSTEIN DEPARTEMENT of the War", superb (Image)

1850, "SCHLESWIG-HOLSTEIN army postal service", single circle postmark on cover to Lütjenburg, reverse broken varnish seal "upper Quartermaster the Schleswig Holst. Army", superb (Image)

1809, postal form from field post office Itzehoe (handwritten) over a cover from heather, superb (Image)

1814, D. S. With interesting content to Uetersen the "provisionally / administration commission / of the Duchy / Holstein in Kiel", varnish seal, superb (Image)

1815, K. D. S. From Kiel to Uetersen, complete varnish seal "royally: / to the Besitzn: the / to räumenden: Duchy: and so on. / arranged / commission", superb (Image)

Two ring cancel "railway station KIELER Z1", offical matter from "Commandant SKARET" (complete lacquer seal) to the Schlesw. Holst. WAR DEPARTMENT in Rendsburg, superb (Image)

1849, package accompanying letter cover from "KIEL" (single circle cancel ½) to Uetersen, handwritten "D. S. M upper margin. ", on the back varnish seal the "Schlesw. Holst. Catering = commission", superb (Image)

1851, two ring cancel "railway station KIELER Z1" and "M. D. S. " of the Chief Quartermaster of the Holstein troops (complete lacquer seal), superb cover to Oldenburg (Image)