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Electors beaker thcentury silesian glassware. Kurfrstenhumpen Beaker with portraits of electors Szklanica portretami elektorw Artist Silesia century Glass cm Catalogue of stolen and missing cultural achievements comp Jan wieczyski Orodek InformacyjnoKoordynacyjny Ochrony Obiektw Muzealnych Warsaw Editor Wojciech Jaskulski Piotr