Mixed franking from 3 Din. (horizontal pair) with 4 Din. On correctly franked international registered letter to Olomouc in the Protectorate Bohemia and Moravia with postal stamp KARLSDORF / G from 29.4.44 and registration 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 registration label on the cover, the in good condition is, is rare. Expertized. Krischke