Emil Alder ( 1870 - 1933 ) was a Swiss painter. Emil Alder s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 722.08 USD for Der verlorene Sohn hütet die Schweine in 2006 to 2171.12 USD for Swiss landscape with mountains. in 2010 , based on the size and medium of the artwork.