Barbara Kowalska

Postage stamp no 1780 from the series „500th Anniversary of Copernicus’ Birth”
- Creator: Henryk Chyliński, engraved Barbara Kowalska
- Date: 26 June 1969
- Description: Postage stamp featuring a portrait of Copernicus based on a painting by Jan Matejko and a drawing of the heliocentric pattern. Print run of 4,154,000 stamps
- Location: Artur Sikora’s Collection
Postage stamp no 1868 from the series „Nicolaus Copernicus. His Life and Work”
- Creator: Helena Matuszewska, engraved Barbara Kowalska
- Date: 26 June 1970
- Description: Postage stamp featuring a portrait of Copernicus based on a miniature drawing by Vincent de Lesseur and a panoramic view of Padua after a 15th-century print. Print run of 6,504,000 stamps
- Location: Ewa Sikora’s Collection
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

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