design of the issued 24g stamp, three proofs in shades ranging from light cobalt to Prussian blue, perforated 14½, with diagonal overprint "Der Leiter Der Deutsche Post Osten 1944", mounted on cardboard with embossed seal of the Wiener Staatsdruckerei, handwritten notes by the printer, minor crease at top, otherwise fine and very rare, signed Jakubek and Ludin (Michel 48P3)