Set Date(s)
20 April 1913
Imperial Germany
Düsseldorf Zeppelin Flight Days
MiNr. 9
This semi-official airmail was issued for use on flights operated at Zeppelin Flight Days in Düsseldorf, 20 April 1913.
Imperforate copies are known.
MiNr. 9 U
Düsseldorf Zeppelin Flight Days
MiNr. 9
This semi-official airmail was issued for use on flights operated at Zeppelin Flight Days in Düsseldorf, 20 April 1913.
Imperforate copies are known.
MiNr. 9 U