Mixed franking from 1 Din. With 16 Din. On properly franked domestic registered letter the 2nd weight step over 20 g to 250 g with advice of delivery to Belgrad with dispatch postal stamp BELA PALANKA / 1 from 11.12.43 as well with censorship seal with censorship cancel 069 / Bgd. The censor office Belgrad and with arrival postmark on the back BEOGRAD 2 from 13.12.43; the cover war folded, expertized Krischke