The Flemish painters Quentin Massys and his son Jan Massys appear to be the authors of four works with a very similar motif. the bust of Jesus Christ. These canvasses can be found in different locations today: the Prado Museum in Madrid (Spain). the RKD Netherlands Institute for Art History of The Hague (Netherlands). https://www.roneverhart.com/William-Tuttle-Hair-White-Color-Foundation-6g/