Yves Gaucher ( 1933 - 2000 ) was a Canadian painter. Yves Gaucher s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 60 USD for SONO, 1963 in 2004 to 48000 USD for DEUX BLEUS - DEUX GRIS in 2006 , based on the size and medium of the artwork.