4 Pfg Firs, 20 Pfg Goethe and 30 Pfg Goethe on properly franked letter with proof of delivery from "Lobenstein (Thür) 14. 2. 46" to Saalfeld, photo expertize Nagler VP (2014) : "the letter with proof of delivery is - genuine -, at the upper margin shows they front- and reverse an opening deficiency. Otherwise is the letter with proof of delivery in perfect condition. . . Postage steps of this kind are very rare. It is me the first known copy, whose the two of them top values. . . The Thuringian postage stamps issue use found".