Adriaen Thomasz Key (after) ( 1544 - 1599 ) was a Belgian painter. Adriaen Thomasz Key (after) s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 1161.57 USD for Portrait of a gentleman, bust-length, in a white ruff in 2004 to 6820 USD for Portrait of a Man in 2012 , based on the size and medium of the artwork.