Giovanni Domenico Porta ( 1722 - 1780 ) was a painter. Giovanni Domenico Porta s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2139.85 USD for Portrait of a Cardinal, half-length, holding a bible in his left hand and pointing to it with his right hand in 2010 to 5211.67 USD for unknown in 2012 , based on the size and medium of t