Giovan Battista Pittoni ( 1687 - 1767 ) was a painter. Giovan Battista Pittoni s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 6512.84 USD for St John the Baptist preaching in 2010 to 7682.98 USD for Veduta dell'interno dell'Anfiteatro Flavio detto il Colosseo in 2014 , based on the size and medium of the artwork.