John Theodore Heins ( 1697 - 1756 ) was a painter. John Theodore Heins s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 485.66 USD for PORTRAIT OF THOMAS DYKE OF TETTON, AGED 57 in 2008 to 4750 USD for Portrait of A Gentleman in 2011 , based on the size and medium of the artwork.