Keywords: Ludwig Thiersch - Unergründlich (signature detail), 1874.jpg Detail from Unergründlich The Unfathomable 1874 showing signature of Ludwig Thiersch 1825 “1909 Digital image from http //web artprice com/classifieds/fineart/list aspx source artist sh 0 idartist MTAzMDM1MDc1ODc4MDc artprice com's auction listing as of February 17 2007 but not copyrightable by them See also Image Ludwig Thiersch - Unergründlich 1874 jpg PD-Art Details of paintings Signatures of painters from Germany Thiersch Ludwig Thiersch Artworks missing infobox template |