Set Date(s)
10 October 1927

This series was issued on 10 October 1927 to commemorate the Conference of the International Labor Organization in Berlin.
The stamps are overprints of MiNr. 389, 391, and 393.
This series was issued on 10 October 1927 to commemorate the Conference of the International Labor Organization in Berlin.
The stamps are overprints of MiNr. 389, 391, and 393.
