Franking with different colours from 1 Din. (on the back), 2 Din. And 7 Din. (2) on properly franked domestic registered letter the 2 weight step over 20 g to 250 g with advice of delivery to Belgrad with dispatch postal stamp SOPOT / 1 from 12.3.43 as well with censorship seal with censorship cancel 027 / Bgd. The censor office Belgrad and on the back arrival postmark BEOGRAD 2 / 4 from 13.3.43; the cover war folded, expertized Brunel