Two different provisional rubber stamps have been used at the Dubrovnik post office. Both contain the words "Država Hrvatska". The easiest way to distinguish them is by measuring their length: Type I is 36,5 mm long, whereas Type II is 72 mm long.
1941 NDH Nationalisation, Business letter, properly franked with 1 Din, sent from Dubrovnik (30.V.41) to Slavonska Požega. Certificate Zrinjšćak.
Stamps overprinted with the "Država Hrvatska" provisional rubber stamp Type I.