Sigmund Freudenberger ( 1745 - 1801 ) was a Swiss painter. Sigmund Freudenberger s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1272.67 USD for Gegenstücke: Bauernidyllen in 2004 to 3562.63 USD for La petite fête imprévue et Les chanteuses du mois de May in 2008 , based on the size and medium of the artwork.