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80-grosz postage stamp no 668 from the series „Nicolaus Copernicus – International Year of Copernicus”
- Creator: Jan Marcin Szancer, Stanisław Łukaszewski
- Date: 1953
- Location: Regional Museum in Toruń
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Sample of postage stamp no 667 from the series „Nicolaus Copernicus – International Year of Copernicus”
- Creator: Bogusław Brandt
- Date: 1953
- Description: 20-grosz postage stamp printed on 22 May 1953 – sample
- Location: Regional Museum in Toruń