Usage of Young King Peter stamps and stationery in April 1941 and beyond was very scarce. Even scarier was the use of nationalized Cyril & Metod stationery in the Independent State of Croatia...
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1941 NDH Nationalisation, "Young King Peter" Cyril & Metod illustrated stationery, correctly franked with 1 Din, sent from Požega (3.V.1941) to Zagreb. Stationery was nationalized with the "Država Hrvatska" provisional rubber stamp.