Adriaen Thomasz Key ( 1544 - 1589 ) was a Belgian painter. Adriaen Thomasz Key s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 48658.76 USD for MARY MAGDALENE in 2006 to 85760.02 USD for PORTRAIT OF A BEARDED MAN, BUST LENGTH, WEARING A CHAIN OF GUILD BUCKLES in 2013 , based on the size and medium of the artwork.