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Leonardo da Vinci (Vinci 1452-Amboise 1519)

Recto: The neck. Verso: A perspective view of the apse of a church  c.1485-90

Recto: Metalpoint (faded), pen and ink, leadpoint, some discoloured white heightening, on pale blue-grey prepared paper. Verso: Pen and ink over metalpoint, on pale blue prepared paper | 20.2 x 28.7 cm (sheet of paper) | RCIN 912609