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Conference on Security and Cooperation in Europe

Bulgaria 1974 / Mini-sheet perforated / mint condition / Michel #Block 53A Note: The black hawi..

1.48€

International Writers Meeting - Sofia '77

Bulgaria 1977 / Mini-sheet / mint condition / Michel #2607KB / Note: The black hawid is not inc..

4.98€

Telecommunications Congress ONLINE '81

German Postal Card 1974 Michel #P114 Postmark (Poststempel): Düsseldorf 1 4000 1981 + slogan / ..

2.68€

UN Conference - UNISPACE '82

Czechoslovakia 1982 / Mini-sheet perforated / mint condition / Michel #Block 49 / Yvert #BF56..

8.98€