Stamp block bl46a from the series „500th Anniversary of Copernicus’ Birth”
- Creator: Waldemar Andrzejewski, engraved Edward Konecki
- Date: 19 August 1973
- Description: Stamp block showing a panoramic view of Poznań from 1740 after a drawing by Friedrich Bernhard Werner and an emblem of the World Philatelic Exhibition 'Poland 73'. Print run of 1,200,000 stamps
- Location: Ewa Sikora’s Collection