[Leonardo da Vinci]. One of the most detailed and famous editions among the fundamental works on Leonardo da Vinci, that of Osvald Siren, Léonard de Vinci in the 1928 Brussels edition by G. van Oest in 3 tomes with 240 plates engraved in black on the recto only, within printed hardback editorial binding. Also in the lot Per il IV centenario della morte di Leonardo da Vinci in the 1919 Bergamo edition of the Istituto Arti Grafiche. (4)

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