Rudolf Hellgrewe ( 1860 - 1935 ) was a German painter. Rudolf Hellgrewe s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 793.27 USD for Sonnenuntergang im Grunewald. Rotgefärbte Baumstämme und Kiefer über Seeufer in 2004 to 12562.81 USD for In the Bay of Istanbul in 2006 , based on the size and medium of the artwork.