The Discovery of Glass, Giovanni Maria Butteri, circa 1570–72

Drawing. Date: circa 1570–72. Dimensions: Sheet: 11 9/16 × 8 7/16 in. (29.3 × 21.5 cm) maximum (an oval shape but with upper two corners cut). Medium: black chalk, brush and brown wash, gouache, pen and brown ink. Collection: Metropolitan Museum of Art. The Discovery of Glass MET DP830340