King mountain trip 1939, unusual trip, registered letter from Vatican 21.8. To Königsberg with among others 2 L. Pius and 75 C. Postal stamp, transit via Frankfurt 26.8. With 2 x 50 Pfg golden eagles in two countries mixed franking, flight stamp and loss three straight line cancel on face, late delivered with arrival Königsberg 9.9.39 reverse, only very few documents from Vatican registered, detailed photo expertize leather International Association for Philatelie Experts, superb (Longhi 972, 1.200 Euro)