I finally found a letter sent from Biograd na Moru and cancelled with the censor cancellation No. 8...
1945 Split local provisional issue, letter sent from Biograd na Moru (7.IV.45) to Niš - Serbia, free of charge as the sender was a military person. Censor cancellation No. 8 (Biograd na Moru).
Rare cancellation "BIOGRAD NA MORU 2" with removed Cyrillic inscription.