Franking with different colours from 2 Din. With 4 and 16 Din. On correctly franked foreign countries airmail special delivery registered cover to Berlin with postal stamp BEOGRAD 1 / 15 from 11.9.43 as well with censorship treatment through the international country letter test place Vienna and arrival postmark BERLIN NW from 17.9.43, good condition of the letter with the not frequent franking