ROC5858104: Three emblems, c.1508-10 (pen and ink, blue bodycolour, wash of ground red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3703861: The arm of St Peter in the Last Supper c.1495 (black chalk, with white chalk, pen and ink and white heightening on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5045175: Codex Atlanticus, sheet 5 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC399251: The proportions of the head, and a standing nude, c.1490 (pen & ink and metalpoint on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

MEV5046902: Codex Atlanticus, sheet 855 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

LRI4575875: Presumed Self-portrait of Leonardo da Vinci (Lucan portrait) - tempera on panel, 1490-1500, Vinci, Leonardo da (1452-1519) / Galleria degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

ROC405194: The drapery of the Virgin's thigh, c.1515-17 (charcoal & black chalk, with brown wash, and white heightening), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

BAL230520: The Last Supper, 1495-97 (fresco) (post restoration), Vinci, Leonardo da (1452-1519) / Museo del Cenacolo Vinciano,Santa Maria delle Grazie (Museum of the Last Supper), Milan, Italy / Bridgeman Images

AII80163: Study of a Madonna and Child (black ink on paper), Vinci, Leonardo da (1452-1519) / Gabinetto dei Disegni e Stampe, Galleria Degli Uffizi, Florence, Tuscany, Italy / Bridgeman Images

ROC3956005: The veins of the arm, c.1508 (pen and ink over traces of black chalk), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF311220: Studies of Horses legs (pen and ink on paper), Vinci, Leonardo da (1452-1519) / Museum of Fine Arts (Szepmuveszeti) Budapest, Hungary / Bridgeman Images

ROC5617344: Heads in profile, c.1478-80 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

BLH5900896: The Madonna of the Yarnwinder, c.1499 (oil on panel), Vinci, Leonardo da (1452-1519) (attr.to) / National Galleries of Scotland, Edinburgh / Bridgeman Images

ROC399230: Studies for an equestrian monument, c.1517-18 (pen & ink and chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC408311: Oak and dyer's greenweed, c.1505-10 (red chalk with white heightening on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC427431: Horse in profile with measurements, c.1490 (metalpoint, pen & ink on blue paper) (detail of 427430), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC427430: Horse in profile with measurements, c.1490 (metalpoint, pen & ink on blue paper) (see also 427431), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC1546907: A Tree, c.1500-10 (red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3931873: A male nude, c.1504-05 (red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC427437: Head of Leda, c.1505-06 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

SAA2014973: The painting by Leonardo da Vinci "Mona Lisa" is back in Louvre museum, Paris, in 1914 after having been stolen in 1911 by Vincenzo Peruggia, Unknown photographer, (20th century) / Bridgeman Images

JEP99710: Fight between a Dragon and a Lion (pen and ink on paper) (print), Vinci, Leonardo da (1452-1519) (school of) / Private Collection / Bridgeman Images

MEV5045173: Codex Atlanticus, sheet 4 recto, 1478-1518 (pen & ink), Vinci, Leonardo da (1452-1519) / Veneranda Biblioteca Ambrosiana, Milan, Italy / Bridgeman Images

ROC3469473: The skull sectioned, 1489 (pen & ink over black chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3703866: Jesus, after Leonardo, 1650 (etching), Hollar, Wenceslaus (1607-77) / Royal Collection Trust / Bridgeman Images

ROC700108: The brachial plexus, c.1508 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC486894: The nerves and arteries of the hand, and the pelvic vessels, c.1508 (pen & ink over chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

CPH256960: Preparatory drawing for the Last Supper (sepia ink on linen paper), Vinci, Leonardo da (1452-1519) / Gallerie dell'Accademia, Venice, Italy / Bridgeman Images

ROC700106: The Neck, c.1485-90 (metalpoint, pen & ink, leadpoint and white heightening on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

XJF308752: Detail of a Centralised church, c.1488 (pen & ink and wash over black chalk), Vinci, Leonardo da (1452-1519) / Institut de France, Paris, France / Bridgeman Images

ROC486892: A branched bur-reed (Typha angustifolia) c.1505 (red chalk on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

GIA4811324: Urban planning: architectural plan (16) by Leonardo da Vinci (Leonardo da Vinci), Vinci, Leonardo da (1452-1519) / Bibliotheque de l'Institut de France, Paris, France / Bridgeman Images

XIR161933: Study of a Horse (metal point on paper) (b/w photo), Vinci, Leonardo da (1452-1519) / Musee Bonnat, Bayonne, France / Bridgeman Images

FAF284625: Interior of the dining hall of the Church of Santa Maria delle Grazie, Milan (b/w photo) / Santa Maria delle Grazie, Milan, Italy / Bridgeman Images

ROC5907183: Studies of two sedges, c.1510-15 (pen & ink on paper), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images

ROC3740758: The cranium, 1489 (pen & ink over black chalk on paper) (verso of 441167), Vinci, Leonardo da (1452-1519) / Royal Collection Trust / Bridgeman Images