Paul Kaspar ( 1891 - 1953 ) was an Austrian painter. Paul Kaspar s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 657.19 USD for Saint Charles´ Church in blue in 2004 to 1986.93 USD for The corner Oper/Kärtnerstrasse in 2016 , based on the size and medium of the artwork.