Giorgione ( 1476 - 1510 ) was an Italian painter. Giorgione s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 663.46 USD for Le tre età dell´uomo in 2004 to 87546.31 USD for The walls of a fortified town seen across a river in 2005 , based on the size and medium of the artwork.