Robert Charles Pena Graham ( 1938 - 2008 ) was an American painter. Robert Charles Pena Graham s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 14400 USD for Single head in 2003 to 287313.98 USD for THE FRIEZE: FIGURES I-A, I-E, I-F, II-D, III-D in 2007 , based on the size and medium of the artwork.