Glassware of this general form, yellow-green and with distinctive applied blue blobbed decoration, was found throughout the Roman empire in the 4th century. The more conical examples often functioned as lamps, whilst the shape of the present lot is more suited to use as a vessel. Bowls of this type are associated with the northwestern provinces of the Roman Empire, especially Germany. For similar cf. Whitehouse, 1997, p. 216, no. 371.