Paul Kalberer ( 1896 - 1974 ) was a German painter. Paul Kalberer s works have been put up for auction numerous times, with realized prices varying from 116.1 USD for Winter auf der Alp in 2005 to 206.48 USD for Portrdt Eugen Stammbach, Pfeife rauchend in 2006 , based on the size and medium of the artwork.