2 interesting examples of the postal stationary used in Croatia & Bosnia and Herzegovina under Austro Hungarian empire.
The first one is a standard Hungarian "closed" postal card from 1892., used entirely in Croatia. It was sent from Josipdol (a very small and obscure village, I am not sure does it still have a PO today) to the city of Gospic. It was addressed to the office of the Empire Prison in Gospic. It has a blue incoming handstamp on the backside.
The 2nd one is a Postal Card issued to being used in Bosnia & Herzegovina. It was sent from Prijedor (BiH) to Zagreb (Croatia). It has a manuscript cancel from Prijedor, and the incoming cancel from Zagreb. That one is from 1891.

