King mountain trip 1939, unusual trip, registered letter from Vatican 21.8. To Koenigsberg 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 Michel F, flight stamp and loss three straight line cancel on face, late delivered with arrival Koenigsberg 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)