Uncertain color (translucent dark green?), appearing opaque black. Slightly irregular circular band; rectangular in section, with rounded edges; no visible join. Outer surface decorated with twelve stamped patterns of two slanting ribs, some decorated with crosshatching, between two thicker and deeper raised ribs. Intact; dulling and creamy brown enamel weathering.
Froehner, Wilhelm. 1903. Collection Julien Gréau. Verrerie antique, émaillerie et poterie appartenant à M. John Pierpont Morgan no. 970, p. 135, pl. 173.7, Paris.