Brcko District - Unique franking .

 Europe-Brcko District of Bosnia and Herzegovina-Bosnia Herzegovina-Republic of Srpska-Croatian Post.  

This card is unusual in that it has postmarks from the 3 Postal Administrations in this area. On the left is the Stamp featuring animals from HP Mostar which is Croatian Post . The centre top is the stamp from BH Posta which is Bosnia Herzegovina and on the top right is Poste Srpska stamp . All postmarked with the cancellations from each Post Office . On the bottom is the tax stamps which are sold in each post office. There is one from the Srpska and one from Bosnia Herzegovina Srpska District. So a unique postal item.