X-radiograph(s) of "Altarpiece"

X-Radiograph Description: X-Radiograph X-Radiograph Settings: Number: 3, a little light, quite good through; 5 ma, 35 kv, 60 sec.; 5 ma, 35 kv, 45 sec.; 5 ma, 35 kv, 75 sec. Burroughs Number: 4028 X-Radiograph(s) of: Artist: German School Title: Altarpiece Date: 16th century Owner: Norton Simon Foundation, Fullerton, CA