Rudolf Hirth Du Frênes ( 1846 - 1916 ) was a German painter. Rudolf Hirth Du Frênes s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 14.36 USD for Segelboote im Hafen in 2005 to 16954.13 USD for The piper in 2008 , based on the size and medium of the artwork.