Hans Happ ( 1899 - 1992 ) was a painter. Hans Happ s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 20.69 USD for Segelboot in einer Höhle in 2004 to 941.97 USD for Mythologische Szene - Raub einer schlafenden Schönheit in 2009 , based on the size and medium of the artwork.