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1971-07-31 | 80th Anniv of Bulgarian Social Democratic Party Congress, Buzludzha. |
perf. 12 1/2; |
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copies 500 000 |
* LC# - Каталог на СП "Българска филателия и нумизматика" Mi# - MICHEL Briefmarken Kataloge Sc# - Scott Postage Stamp Catalog
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Complete set (1) | | |
0.14 € buy all set MNH |
n.a. used |
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