Ubaldo Gandolfi ( 1728 - 1781 ) was an Italian painter. Ubaldo Gandolfi s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 54386.47 USD for A Sybil (?) in 2003 to 245672.35 USD for A sleeping legionary in a helmet in 2010 , based on the size and medium of the artwork.