The thematic exhibit of the state valuable postal matter of the Russian Federation UNESCO World Heritage Sites in Russia, presented by JSC Marka at the Apatin International Online Philatelic Exhibition, was awarded a diploma.
The event was held from December 15, 2025, to January 15, 2026, in the city of Apatin. The exhibition was organized by the Association of Philatelists of the Serbian city of Apatin and the Federation of Italian Philatelic Societies. Philatelists from 14 countries took part in the exhibition, presenting 60 exhibits.
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