GIACOMO BALLA (TORINO 1871 - ROMA 1958) "Due piani di tavolino" 1920 circa pencil and watercolour on wood cm 23x23 cm 44,5x44,5 plexiglass table base h 55 cm Provenance Casa Balla, Rome Galleria G. Molino, Rome Molino Collection, Caresana Molino Collection, Milan This work is accompanied by photo-certificate of authenticity issued by Luce Balla The authenticity of the work has been confirmed by Dr. Elena Gigli, Head of Archivio Gigli per l'Opera di Giacomo Balla