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Postage stamp no 1867 from the series „Nicolaus Copernicus. His Life and Work”
- Creator: Helena Matuszewska, engraved Eugeniusz Tirdiszek
- Date: 26 June 1970
- Description: Postage stamp featuring a portrait of Copernicus based on a miniature drawing by Marcel Bacciarelli and a panoramic view of Bologna based on a 15th-century print. Print run of 6,795,000 stamps
- Location: Ewa Sikora’s Collection
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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
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Postage stamp no 1869 from the series „Nicolaus Copernicus. His Life and Work”
- Creator: Helena Matuszewska, engraved Bogusław Brandt
- Date: 26 June 1970
- Description: Postage stamp featuring a portrait of Copernicus based on a painting by Zinck Nor and a panoramic view of Ferrara after a 15th-century print. Print run of 3,070,000 stamps
- Location: Ewa Sikora’s Collection