Jean François (john) Kaufman ( 1868 - 1953 ) was an American painter. Jean François (john) Kaufman s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 577.62 USD for BEACH AT SUNSET in 2004 to 920 USD for PORTRAIT OF A CAVALIER in 2005 , based on the size and medium of the artwork.