English (United Kingdom) 
Polski (PL) 
Stamp block bl45 from the series „500th Anniversary of Copernicus’ Birth”
- Creator: Waldemar Andrzejewski, engraved Barbara Kowalska
- Date: 28 September 1972
- Description: Stamp block bl45 with an illustration of the Ptolemean and Copernican systems taken from A Cellarius’s L’Harmonica Microcosmica from 1660 and the emblem of the World Philatelic Exhibition 'Poland 73'. Print run of 1,233,000
- Location: Ewa Sikora’s Collection
