The relief pattern of these brooches was created by working a thin sheet of metal from the reverse side. Roman coins were the inspiration for such designs.
from Marchélepot (Somme), France; Albert Jumel, Amiens, France; J. Pierpont Morgan, London and New York (until 1913); Estate of J. Pierpont Morgan(1913–1917)
Ricci, Seymour de. Catalogue of a Collection of Gallo-Roman Antiquities Belonging to J. Pierpont Morgan. Paris: C. Berger, 1911. no. 24, p. 8, pl. II.
Brown, Katharine R., Dafydd Kidd, and Charles T. Little, ed. From Attila to Charlemagne: Arts of the Early Medieval Period in the Metropolitan Museum of Art. New York and New Haven: The Metropolitan Museum of Art, 2000. p. 15, 345, fig. 3.2.