Hermann Sen Herdtle ( 1819 - 1889 ) was a German painter. Hermann Sen Herdtle s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 13.6 USD for Der Tvdi von der \lialp aus; "Kirchle in Appenzell" in 2005 to 919.54 USD for Partie in Wassen am Gotthard in 2009 , based on the size and medium of the artwork.