Keith Haring (after) ( 1958 - 1990 ) was an American painter. Keith Haring (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 551.24 USD for tony shafrazi poster in 2005 to 2250 USD for Untitled (set of 5 announcement cards for the Fertility portfolio with title card) in 2017 , based on the size and medium of the artwork.