2916296 Fol 9 verso, \'De revolutionibus orbium caelestium\', by Nicolaus Copernicus (engraving) by Polish School, (16th century); The University of St. Andrews, Scotland, UK; (add.info.: Copernicus, Nicolaus (1473-1543) The wax staines may indicate that the controversial diagram showing the sun a the centre of the universe was obscured by an early owner.); Polish, out of copyright.