World stamps
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Stamps Category PATRIMONIO MUNDIAL DE LA HUMANIDAD
GERMANY - Germany - Rammelsberg mines, historic city of Goslar and hydraulic management system
Juan Martinez Ferrer
GREECE - The historic center (Chorį) with the monastery of Saint John the Theologian and the Grotto of the Apoca
Juan Martinez Ferrer
RUSSIA - Historical center of Saint Petersburg and adjacent monumental complexes
Juan Martinez Ferrer