These two fragments are from icons of the Crucifixion. In the Gospels (Mark 15:39; Matthew 27:54), the Roman centurion identifies Christ as the Son of God at the Crucifixion.
[ Blumka Gallery, New York]; Dr. Andrew J. Werner, New York (until 1981)
The Metropolitan Museum of Art. "One Hundred Eleventh Annual Report of the Trustees for the Fiscal Year July 1, 1980, through June 30, 1981." Annual Report of the Trustees of the Metropolitan Museum of Art 111 (1981). p. 42.
Wixom, William D., ed. Mirror of the Medieval World. New York: The Metropolitan Museum of Art, 1999. no. 110, p. 94.