File:Unknown - Portrait of an alchemist - MP 159 - National Museum in Warsaw.jpg

Summary
Artist: Unknown Title: Portrait of Alchemist Michał Sędziwój (Michael Sendivogius) Date: 17th century Medium: Oil on canvas Height: 72.2 cm (28.4 in) Width: 58 cm (22.8 in) Source: https://commons.wikimedia.org/wiki/File:Unknown_-_Portrait_of_an_alchemist_-_MP_159_-_National_Museum_in_Warsaw.jpg; https://cyfrowe.mnw.art.pl/en/catalog/517515