The genesis of Prince Eugene of Savoy’s outstanding collection of prints has hardly been researched so far. One of its most prized holdings, particularly coveted by the Prince, is an extensive Raphael oeuvre (today in the Albertina), consisting of seven large folio volumes that contain the prints after Raphael by contemporary and later engravers. Like the bulk of the collection, the Raphael oeuvre had been assembled and catalogued in 1717/18 by the Parisian bookseller, publisher and print dealer Jean Mariette in cooperation with his now more famous son Pierre-Jean Mariette. The lecture by Antoinette Friedenthal - who is currently preparing an annotated edition of the correspondence between Jean Mariette and Pierre-Jean Mariette, 1717-1719 - will explore this important chapter in the history of connoisseurship.