Johann Conrad Seekatz (after) ( 1719 - 1768 ) was a German painter. Johann Conrad Seekatz (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1706.07 USD for A nobleman with his dog. in 2004 to 7725.59 USD for Travelling Gypsy Family in 2012 , based on the size and medium of the artwork.