A few philatelically motivated letters and stationery are known - those that are properly franked and actually passed through the regular postal channels are rare and valuable.
1943/44 Šibenik local provisional issue, registered stationery, properly franked with 11,7 kn (0,3 * 4 = 1,2 kn of Šibenik I, 3,5 * 2 = 7 kn of Šibenik II and 3,5 kn of NDH definitive), charged with 5 kn war tax, sent from Šibenik (18.VIII.44) to Imotski (1.IX.44).