Authored by Megan Duffy
Wood, copper and silver gilt, enamel, semi-precious stones
18 15/16 x 12 5/8 x 3 1/8 inches (479 x 321 x 79 mm)
The two small panels in the center are Byzantine and date from the late 11th or early 12th century. The larger triptych which houses the Byzantine works is Mosan and dated 1156-1158.
Purchased by Pierpont Morgan, 1910