Guillermo Chávez Vega ( 1931 - 1990 ) was a painter. Guillermo Chávez Vega s works have been put up for auction numerous times, with realized prices varying from 3272.47 USD for Sin t√≠tulo in 2014 to 3718.72 USD for Sin t√≠tulo in 2014 , based on the size and medium of the artwork.