![Portrait of Leonardo da Vinci attributed to Francesco Melzi](https://cmsadmin.rct.uk/sites/default/files/lead_image_half_height/RC1894_Leonardo%201600%20x%20625_Yellow.jpg)
LEONARDO DA VINCI (VINCI 1452-AMBOISE 1519)
Recto: The skull sectioned. Verso: The cranium
1489RCIN 919057
Recto: Two drawings of the skull seen from the left, the one below squared for proportion; notes on the drawings. Verso: Drawing of the right side of a skull; drawing of the right side of a skull, showing relation between the orbit and maxillary antrum; notes on the drawings