X-radiograph(s) of "Philosopher"

X-Radiograph Description: X-Radiograph; Detail : head Burroughs Number: 1679 X-Radiograph(s) of: Artist: Rembrandt van Rijn, Dutch, 1606-1669 Artist: Also att. to Rembrandt Workshop Title: Philosopher Date: 1650-6 Owner: National Gallery (Widener Collection), Washington, DC Object Number: 1942.9.66