Derventa parcel receipt notice from 15.III.1948, send to the nearby village Žeravac. After 10 days (25.III.1948) resend in Derventa post office with manipulation notice: "Please, deliver by courier" and with rare cancellation "National Republic of Bosnia and Herzegovina / Žarevac".
Front side
Back side.
Note that the Derventa parcel receipt is also known as Banja Luka postal stationery.