Barac & Pervan : Letter cover sent from Belgrade to Wien franked with 35 para green perforation 9:12. 1/2Trace of bending, but not across the stamp.

Letter cover sent from Belgrade to Wien franked with 35 para green perforation 9:12. 1/2Trace of bending, but not across the stamp.

Letter cover sent from Belgrade to Wien franked with 35 para green perforation 9:12 1/2. Trace of bending, but not across the stamp.