Albrecht Dürer, The First Knot. Interlaced Roundel with an Oblong Panel in its Center, ca. 1521, woodcut, 10 11/16 x 8 3/8 inches (27.1 x 21.2 cm). George Khuner Collection. Bequest of Marianne Khuner, 1984. Courtesy of The Metropolitan Museum of Art