W. R. Valentiner. "Detroit Holds Fine Loan Show of Italian Art: Exhibition of Italian Painting from Giotto to Raphael." Art News 31 (March 18, 1933), p. 9, no. 5, ill. p. 10, attributes it to a follower of Daddi and identifies it as a reliquary; illustrates it with the filigree tondo in place.
Wilhelm R. Valentiner. "Die Leihausstellung frühitalienischer Malerei in Detroit." Pantheon 12 (1933), p. 238, mentions it as a reliquary in the style of Daddi.
W. R. Valentiner in The Sixteenth Loan Exhibition of Old Masters: Italian Paintings of the XIV to XVI Century. Exh. cat., Detroit Institute of Arts. Detroit, 1933, unpaginated, no. 5, as "Christ as Judge" by a follower of Bernardo Daddi; dates it about 1340.
Richard Offner. A Critical and Historical Corpus of Florentine Painting. 4, section 3, New York, 1934, pp. XIII, 189–90, 212, add. pl. VIII, attributes it to a close follower of Daddi and says that the painting is in its original form; compares it to an Annunciation in the Musée du Louvre, Paris, placing it roughly in the same period or slightly later; illustrates it without the silver filigree tondo.
George Kaftal. Iconography of the Saints in Tuscan Painting. Florence, 1952, col. 796.
Miklós Boskovits in Richard Offner et al. "The Fourteenth Century: The Works of Bernardo Daddi." A Critical and Historical Corpus of Florentine Painting. 3, section 3, new ed. Florence, 1989, p. 43 n. 42, pp. 84, 386, considers it an early work of Daddi; tentatively suggests that it was originally the top of a crucifix.
Miklós Boskovits in Richard Offner et al. "The Fourteenth Century: Bernardo Daddi, His Shop and Following." A Critical and Historical Corpus of Florentine Painting. 4, section 3, new ed. Florence, 1991, pp. 22, 333–36, 510–11, pl. XLIIIa.
Bryan C. Keene in Florence at the Dawn of the Renaissance: Painting and Illumination, 1300–1350. Exh. cat., J. Paul Getty Museum. Los Angeles, 2012, p. 6.
Christopher W. Platts in Florence at the Dawn of the Renaissance: Painting and Illumination, 1300–1350. Exh. cat., J. Paul Getty Museum. Los Angeles, 2012, pp. 129–31, no. 29, ill. (color, overall and detail).