Carl Henrik D` Unker ( 1828 - 1866 ) was a Swedish painter. Carl Henrik D` Unker s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1339.66 USD for Middagsselskab i en tysk krostue. in 2004 to 8600.55 USD for The first and second-class waiting room in 2007 , based on the size and medium of the artwork.