Johann Christian Sperling ( 1690 - 1746 ) was a German painter. Johann Christian Sperling s works have been put up for auction numerous times, with realized prices varying from 54.27 USD for Portrait of Lieutenant-General George Sandys (1796-1864), Colonel of the 6th Madras Light Cavalry in 2008 to 500 USD for Portrait of a Man in 2015 , based on the size and medium of the artwork.