Hermann Pieper ( 1909 - 1964 ) was a Swiss painter. Hermann Pieper s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 600.5 USD for Aktmodell umgeben von zeichnenden Frauen. in 2004 to 5517.24 USD for Badende Frauen am Genfersee. in 2012 , based on the size and medium of the artwork.