Hello Sandor,
the set was designed and engraved by Martin Andrä; it was edited 1985 as "Tagungsserie" in Chemnitz
(former Karl-Marx-Stadt/GDR) for the "Bezirksausstellung".
Wolf Peter Sander was the editor
There ia a nice picture in the book "Überall ist Wunderland" edited by edition Krannich, page 74.
Best regards
Michael