Sano Di Pietro ( 1405 - 1481 ) was an Italian painter. Sano Di Pietro s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 42000 USD for A triptych: the central panel: The Madonna and Child with two angels and Christ on the Cross; the wings: Saint John the Baptist; in 2005 to 365000 USD for The Madonna and Child with two angels in 20