The Oesterreichische Nationalbank is the Austrian member of the Eurosystem and was the monetary authority for Austria from 1923 to 1938 and from 1945 to 1998, issuing the Austrian schilling.
It started operations on 1 January 1923 under the economic assistance provided to Austria by the Economic and Financial Organization of the League of Nations, replacing the Austro-Hungarian Bank with its name recalling that of the Austro-Hungarian Bank's predecessor entity founded in 1816. It was liquidated following the Anschluss in March 1938, and re-established in July 1945.
The OeNB is a joint-stock corporation governed by special legislative provision.
Wikipedia https://en.wikipedia.org/wiki/Oesterreichische_Nationalbank
Address 2 Alfred-Grünfeld-Gasse, Wien 1090, Austria
Coordinates 48°12'58.878" N 16°21'15.967" E