Peter Ernst Rockstuhl ( 1764 - 1824 ) was a Russian painter. Peter Ernst Rockstuhl s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 2187.91 USD for A gentleman in profile to the right, in blue coat, white waistcoat with blue trim, knotted white cravat, powdered hair in 2005 to 8899.44 USD for På natten (At Night). in 2011 , base