Marco Liberi ( 1640 - 1687 ) was an Italian painter. Marco Liberi s works have been put up for auction numerous times, with realized prices varying from 19185.78 USD for An Allegory of Filial Advice in 2003 to 27500 USD for AN ALLEGORY OF TRUTH, JUSTICE, AND INNOCENCE in 2019 , based on the size and medium of the artwork.