Dipl.-Ing. Walter Michael Hopferwieser
Space Mail; Rocket Mail

Expert since: 1993 ·  AIEP member since: 1998
GWP; Verein für Weltraumphilatelie; Space Unit

Correspondence: German, English, (Russian)
walterhopferwieser@gmail.com
+43 664 5022998

Untere Hauptstrasse 31
7501 Oberdorf (Bgl.)
Austria

Personal reference collections: Space mail (Soviet Union, Russia, world-wide); Rocket mail to 1944
Personal forgeries collections: Rocket mail, Space mail