Sergio Unia ( 1943 - ) is a painter. Sergio Unia s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 291.69 USD for Nudo disteso in 2005 to 4094.45 USD for “Nudo di ragazza al torrente” 1987 in 2007 , based on the size and medium of the artwork.