Charity stamps over 0, 50+1, 50 and 1+3 Din. With \"network overprint tips downward\" as well 2+6 Din. With \"network overprint tips to the top\" and 4+12 Din. With \"network overprint tips downward\" from the set \"Aid for Serbian prisoners of war\" on official First Day Cover cover with First Day special cancellation BEOGRAD from 5.12.41