Set of 9 Austrian Aertze / Doctors issue, each on different art postcard illustrated with a parrot. The postcard were all sent airmail to Hirschberg, and have the Weihnachts-Breifmarkenschau / Christmas Stamp Show 12/15/1938 cachet as well as Wien CDS, and some with the Vienna registration label as well. The nine stamps on cover CV ANK EUR705.