Liepmann Fraenckel ( 1774 - 1857 ) was a Danish painter. Liepmann Fraenckel s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 579.91 USD for Ovalt miniatureportræt forestillende kunstnerens søster in 2005 to 1040 USD for The artist's self-portrait in 2008 , based on the size and medium of the artwork.