Davide Boriani (Milan 1936) "Magnetic Surface" 1959/62 Aluminum, glass, iron powder, permanent magnets, polyurethane foam, wood, and motor 55.5x50.5x17.5 cm Signed twice on labels on the reverse Provenance Valmore art studio, Vicenza Private collection, Milan Exhibitions “Programming Art. Olivetti and the kinetic neoavant-gardes†Olivetti Store, Piazza San Marco, Venice, August 30 - October 28, 2012