Millon & Associés, Paris, 22 June 2012, lot 885 Nico F. Bijnsdorp Collection (NFB 276), acquired from the above
These vessels, known as acetabulum, were named from the Latin word acetum meaning vinegar and abulum the suffix denoting a small vessel. As today, the Romans believed vinegar was good for the constitution and such cups served as tableware to serve (vinegar) sauces. They were also used as a measure: 0,068 litre (Hilgers 1969). They are closely related to the cast monochrome and mosaic patella cups.
This vessel belongs to Isings form 69a and Vessberg pyxis type B.II. For examples of the type cf. S.B. Matheson, Ancient Glass in the Yale University Art Gallery, Yale, 1980, p.36-7, no. 106 and D. Whitehouse, Roman Glass in The Corning Museum of Glass, vol.1, Corning, 1997, 84-88, particularly nos. 117-8