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

X-Radiograph Description: X-Radiograph X-Radiograph Settings: 5 ma, 65 kv, 1 min. Burroughs Number: 4417 X-Radiograph(s) of: Artist: Ingres, Jean-Auguste-Dominique (?), French, 1780-1867 Title: Portrait of a Man Date: c.1800 Description: 2 Panels with Elvacite Owner: Harvard University Art Museums Object Number: 1943.250