Mixed franking from 1 Din. With 16 Din. On correctly franked domestic registered letter the 2. weight step over 20 g to 250 g with return receipt to Belgrad with postal stamp BELA PALANKA / 1 from 11.12.43 as well with censorship seal with censorship stamp 069 / Bgd. The censor office Belgrad and with arrival postmark on the back BEOGRAD 2 from 13.12.43