310.23 during a open day steam event in April 2000 at the "Heizhaus Strasshof", a railway museum next to Vienna.  

This picture was taken by <A HREF="MAILTO:sybic@chello.at">Sybic</A> - <A HREF="http://www.bahnnews-austria.at" target="_blank">www.bahnnews-austria.at</A>