The historical context
Stamp of 1850 of the KKPost, on handmade paper
The Austrian Empire stamps were first issued on June 1, 1850: a coat of arms under the text KK Post-Stempel.
 The word Austria does not appear, which is logical, as the issue served in whole central Europe, more precisely in all or in part of the current following countries:
The languages used were
French (postmark Chargé).
The Austrian Empire was covering all central Europe
For a better understanding of the historical context, see the article