Poczta Polska released a B-denominated stamp on 6 October 2026 marking the birth centenary of Professor Krzysztof Skubiszewski (1926–2010). The design uses his photograph.

The print run is 96,000 stamps, printed in offset on fluorescent paper. Each stamp measures 31.25 × 43 mm and the sales sheet contains twenty stamps. The release also includes a folder, commemorative card and maximum card.