The product is a pair of vintage nautical charts 6647/6648 of the Glénan Islands. These charts would have been used by sailors and navigators to plot their course and navigate the waters around the Glénan Islands. The charts likely feature detailed topographical information, including the locations of landmarks, navigational hazards, and other key features of the area. With their historical significance and unique charm, these vintage nautical charts would make a valuable addition to any collection or display related to maritime history.