Gianfranco Zappettini ( 1939 - ) is an Italian painter. Gianfranco Zappettini s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 389.06 USD for Superficie acrilica in 2006 to 17400.86 USD for Un quadrato e una linea luce verticale in 2017 , based on the size and medium of the artwork.