X-radiograph(s) of "Catalan Altar Wings"

X-Radiograph Description: X-Radiograph (3) X-Radiograph Settings: 5 ma, 50 kv, 80 sec.; 5 ma, 50 kv, 100 sec.; 5 ma, 50 kv, 55 sec. Burroughs Number: 4218 X-Radiograph(s) of: Artist: Spanish (Catalonian) School Title: Catalan Altar Wings Description: panel 2.? cm thick Owner: Smith College Museum of Art, Northampton, MA