1945 Sarajevo local provisional issue, postal stationery, type IIb, sent from Bosanski Šamac (12.IX.1945) to Gradačac.
1945 Sarajevo local provisional issue, postal stationery, type Ia, sent from Teslić (15.III.1946) to Gradačac. Correctly franked with an additional 0.50 din "Partisan" stamp affixed upside down.
The difference between the Type I and II and between their subtypes a and b.
