Alfred Renz ( 1877 - 1930 ) was a German painter. Alfred Renz s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 183.24 USD for zugeschrieben: Strasbourg in 2004 to 1050.5 USD for DER HAMBURGER HAFEN in 2007 , based on the size and medium of the artwork.