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Portrait of Nicolaus Copernicus (1473-1543) by Marco Basaiti, 1512, Lviv National Art Gallery. From the collection of Prince Andrzej Lubomirski in Przeworsk. In the years 1510-1512, Copernicus drew up a map of Warmia and the western borders of Royal Prussia, intended for the congress of the royal council in Poznań. Together with the Chapter of Warmia, in 1512 he swore an oath of allegiance to the king of Poland. #artinpl #1510s #astronomer #venetian #painting #canvas #16thcentury