Franking with different colours from 2 Din, 4 Din. And 16 Din. On properly franked airmail foreign countries special delivery registered mail letter to Naila with dispatch postal stamp PANCEVO / 6 from 15.11.43 as well with censorship seal the international country letter test place Vienna and on the back arrival postmark NAILA / a from 21.11.43; scarce franking combination on well preserved cover, expertized Krischke