X-radiograph(s) of "Madonna and Child (left half of diptych) (see Gerard David for right half with David, Bishop and Donors)"

unframed, 4-ply mat, reuse existing hingesX-Radiograph Description: X-radiograph; Tracing-Mylar overlay of a Madonna and Child by the Master of St Ursula Legend in the Met, NY, which is close to 1906.6A; Portion of Picture covered: ca.75%; X-Radiograph Settings: #1 : 22 kv, 3 ma, 2 min., 41"; #2 : Traverse focus, 22 kv, 3 ma, 2 min., 41"; #4 : Traverse focus, 20 degrees to plane of rotation, 22 kv, 6 ma, 3 min., 41"; #5 : Traverse focus, 70 degrees to plane of rotation, 22 kv, 6 ma, 3 min., 41"; Burroughs Number: 2068 X-Radiograph(s) of: Artist: Follower of Rogier van der Weyden Title: Madonna and Child (left half of diptych) (see Gerard David for right half with David, Bishop and Donors) Date: ca.1480 Description: Oil (and tempera?) on panel; 55.5 cm. x 35.7 cm., actual Owner: Harvard University Art Museums Object Number: 1906.6.A