Mixed franking from 1, 50 Din. (pair) with 7 Din. On properly franked international registered letter to Au by Bad Aibling with postal stamp POZAREVAC / 6 from 15.6.43 as well with censorship seal the international country letter test place Vienna and with arrival postmark on the back AU (b BAD AIBLING) from 24.6.43; the cover was folded, expertized Krischke