Postage stamp of the Austro-Hungarian Empire for usage by <a href="https://en.wikipedia.org/wiki/en:Austrian_post_offices_in_the_Ottoman_Empire" class="extiw" title="w:en:Austrian post offices in the Ottoman Empire">Levant Post Offices</a>, 5 Piaster on 50 Kreuzer lilac, used in the Post Office of <a href="https://en.wikipedia.org/wiki/en:Preveza" class="extiw" title="w:en:Preveza">Preveza</a>.
Austro-Hungarian postal authorities
1891
Scan of original