Hi Sergio!
Do you know the booklet
FOCKE WULF FW 58 "WEIHE", Luftfahrt Bild-Dokumente LBD 2, Hans Rolbetzki, Publizistisches Archiv Karl R. Pawlas?
There are about 80 pics in there. Most of them full page showing many different Fw 58 and many detail shots. There are also 2 pics of Austrian Fw 58 in there. 302 and 303
I tried to find the book at
www.zvab.com and
www.abe.com but no results.
Cheers, Simon