Mixed franking from 3 Din. (horizontal pair) with 4 Din. On properly franked international registered letter to Olomouc in the Protectorate Bohemia and Moravia with dispatch postal stamp KARLSDORF / G from 29.4.44 and registered label with German toponym KARLSDORF as well with censorship seal the international country letter test place Vienna and with arrival postmark Olomouc from 12.5.44 on the letter back. The registered label on the cover, the in good condition is, is rare. Expertized. Krischke