This very pretty little cast bronze bust of an Art Nouveau maiden  with hair dressed in a chignon tied with a garland of fruit, in an off the shoulder dress with one breast exposed, is a charming miniature in a style more usually seen near to life size - it is only 9.5cm high.  Signed A. Zehle with foundry mark 'KKKF Wien'  for  K.K. KUNST-ERZGIESSERES WIEN
 
A. Zehle is unexpectedly Ernst Zehle, 1876-1940, who was a painter and sculpture, probably German by origin rather than Austrian.  Other examples of his work can be found online but biographical detail beyond dates is distinctly thin.