Walter Rudolf Mumprecht ( 1918 - 2019 ) was a Swiss painter. Walter Rudolf Mumprecht s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 290.26 USD for Katze in 2004 to 9763.62 USD for Sehend hören, hörend sehen in 2013 , based on the size and medium of the artwork.