GREECE: Postage stamp of 1933 Zeppelin issue, 100 dr. The set consisted of three values: 30, 100 and 120 drachmae. It was issued on 1933-05-02 and remained on sale until 1933-05-27. It was issued for the flight of LZ-127 Graf Zeppelin on May 29 form Rome to Rio de Janeiro. The stamps were designed by A. Gavallas and printed by Aspiotis-ELKA in Corfu.

The Greek "Zeppelin" stamps are common in mint (hinged or not) condition, but rare in used condition.

For more info about Zeppelin stamps, refer to Zeppelin mail article on Wikipedia.