The 13th Congress of the Bulgarian Communist Party 1986
Sýni: Búlgaría - Venjuleg frímerki - 1986 - The 13th Congress of the Bulgarian Communist Party - 1 frímerki.
Sýni: Búlgaría - Venjuleg frímerki - 1986 - The 13th Congress of the Bulgarian Communist Party - 1 frímerki.
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