X-radiograph(s) of "Portrait of a Man"

X-Radiograph Description: Negative Burroughs Number: 504 X-Radiograph(s) of: Artist: Lois, Jacob, Dutch, act. 1634-died 1676 Artist: As Follower of Rembrandt van Rijn Title: Portrait of a Man Owner: Philadelphia Museum of Art (Johnson Collection), PA Object Number: 492