Vinci Postcard - Duplication of the cube

Leonardo da Vinci (1452-1519)
Duplication of the cube, ca. 1503-1505
Feather pen and dark brown ink. H. 20.2 ; L. 28.3 cm
Milano, Veneranda Biblioteca Ambrosiana
© Photo Veneranda Biblioteca Ambrosiana / Metis e Mida Informatica / Mondadori Portfolio
© Rmn - Grand Palais, Paris 2019

Exhibition Leonardo da Vinci
Musée du Louvre, Paris
from 24 Oct 2019 to 24 Feb 2020