Covers franked with the Mostar Provisional Issue are exceedingly rare. While three distinct tariff periods exist, items from the first and second periods are significantly scarcer than those from the third. Of particular interest is the first period, where the rates aligned with the so-called 'Split Tariff': a 20 Kn basic letter rate and a 30 Kn registration fee. The cover shown below is the only known example used on the First Day of Issue...
1945 Mostar Provisional Issue: Registered commercial cover franked with 50 Kn using Mi. 7 (20 Kn basic letter rate + 30 Kn registration fee), sent from Mostar to Dubrovnik on April 28, 1945. Features a Trebinje transit postmark of May 3 and a Dubrovnik arrival postmark of May 6. Censored in Mostar with a single-line cachet "CENSURA". First Day of Issue!
