Matthias Petrus Schaller ( 1965 - ) is a German painter. Matthias Petrus Schaller s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 21600 USD for Stars of Architecture, 2002-2004 in 2005 to 24000 USD for Masters of the Real, 2000-2002 in 2005 , based on the size and medium of the artwork.