Stamps of Bulgaria, 29 Oct 1974
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postage
1974, Oct 29 Conference on European Security and Cooperation issue unwmk p. 13x13.25
| - | 13s | multi | doves | — | — | |
| - | 13s | multi | map of Europe | — | — | |
| - | 13s | multi | Palm Fronds | — | — | |
| - | 13s | multi | inscription | — | — |
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