- Aristidis XANTHOPOULOS
- Mdm. Nia STRATOU
- HELLENIC PHILATELIC SOCIETY of AMERICA
- HELLENIC PHILATELIC SOCIETY of GREAT BRITAIN
- POSTZEGELVERENIGING GRIEKENLAND
- Nikolaos ZAMPELLAS
- Alkiviadis KALOGERAS
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Hellenic Philatelic Federation
Hellenic Philatelic Federation