Keywords: Boltraffio after Leonardo da Vinci, Head of St John the Evangelist.jpg Artwork Creator Leonardo Da Vinci secondhalf other date century 15 Pencil black chalk paste and watercolour size mm 562 432 Institution Musées de Strasbourg Strasbourg object history credit line accession number WGA link 12777 http //www wga hu/art/l/leonardo/07study3/2heads4 jpg http //www wga hu/html/l/leonardo/07study3/2heads4 html PD-old-100 graphics religious Italian 1451-1500 WGA form graphics WGA type religious WGA School Italian WGA time period 1451-1500 Copies of Last Supper by Leonardo da Vinci Collections of the Cabinet des estampes et des dessins Strasbourg Watercolor paintings in Strasbourg Giovanni Antonio Boltraffio |