Sebastiano Conca ( 1679 - 1764 ) was an Italian painter. Sebastiano Conca s works have been put up for auction numerous times, with realized prices varying from 17520.22 USD for MADONNAN MED BARNET in 2003 to 273851.02 USD for Allegoria della Giustizia; Allegoria della Prudenza; Allegoria della Temperanza e Allegoria della Fortezza in 2003 , based on the size and medium of the artwork.