Karadjordeje / "Schonbrunn". 1942 Stampless Feldpost cover and lettersheet from paddle steamers on the River Danube requisitioned as hospital ships during the war, the cover with violet circular "LAZARETTSCHIFF / Briefstempel / KARADJORDJE" and a mute machine of Vienna, the lettercard with violet two line and circular "Lazarettschiff Schonbrunn" cachets and a Feldpost g c.d.s. Two very scarce named cachets from small River Danube hospital ships. (2). Photo on Page 40. (Image1)