Cassius Marcellus Coolidge ( 1844 - 1934 ) was an American painter. Cassius Marcellus Coolidge s works have been put up for auction numerous times, with realized prices varying from 520000 USD for A BOLD BLUFF and WATERLOO in 2005 to 602500 USD for THE POKER GAME in 2008 , based on the size and medium of the artwork.