Erimtan Archaeology and Arts Museum
Late first century BC to AD mid-first century
Glasswork; ribbed bowl
Height: 4.0cm; Diameter rim: 15.2cm
Early Imperial Period
The production technique of the ribbed bowls which are dated before the invention of the blowing technique could not be finalized. The forms and conditions of these bowls need to be carefully defined. A ribbed bowl which has sharp introversion in the rim and a narrowing rim from the trunk should be made by using the mould-blowing technique, not by simply moulding. Some researchers have suggested that ribbed bowls are made in a hollow mould, while others have used the lost wax technique. It is conceivable that a ribbed disc can be poured onto the mould, and after it has cooled down, it can be collapsed again with the help of heat on a semi-spherical inner mould. During some experimental production stages of a ribbed bowl, it is understood that the ribs can form the glass melt by means of a pair of tweezers that can be compressed by means of a spacer (without the mould).
Monochrome coloured and naturally coloured ribbed bowls of the late first century BC and first century AD, presumably developed from the Syro-Palestinian monochrome ribbed bowls of the early first century BC. This type of monochrome and/or naturally coloured ribbed bowls were the pre-eminent among cast tableware that can be ascribed to the early imperial period. The earliest classes of Roman ribbed bowls have many stylistic and technical features in common with those ascribed to the late Hellenistic period. Ribbed bowls such as this one were produced from Tiberian times to the end of the Flavian period, making monochrome ribbed bowls one of the last types of Roman glassware to be made by casting techniques.
The ribbed bowl in our collection is light blue-green coloured; sagged; rotary-polished on the interior, the outside of the rim and across the tops of the ribs; fire-polished on the rest of the exterior and has an almost flat bottom. On the exterior, thirty-one ribs of varying length are slanting downwards vertically; the ribs end beyond the junction of the side and the bottom and the side of the bowl is convex between some of the ribs. The bowl has small amount of lime encrustation, milky weathering, dulling and fine pitting on the surface.
By stylistic analysis and material dating
Baykan, C. and Baykan, D., Eskiçağ’da Cam, İstanbul: Türk Eskiçağ Bilimleri Enstitüsü Yayınları, 2013.
Fleming, S. J., Roman Glass: Reflections on Cultural Change, Pennsylvania: University of Pennsylvania Museum of Archaeology and Anthropology, 1999.
Lightfoot, C. S. and Arslan, M. (eds), Ancient Glass of Asia Minor: The Yüksel Erimtan Collection, Ankara: Ünal Ofset, 1992.
Newby, M. S., Glass of Four Millennia, Oxford: Ashmolean Museum, 2000.
Özgümüş, Ü. C., Çağlar Boyu Cam Tasarımı, İstanbul: Arkeoloji ve Sanat Yayınları, 2013.
Ezgi Özdemir, Selma Ünal "Ribbed Bowl" in MWNF GALLERIES , Museum With No Frontiers, 2020. http://www.museumwnf.org/thematicgallery/thg_galleries/database_item.php?itemId=objects;DGA;tr;Mus41;1;en&id=glass
Prepared by: Ezgi Özdemir, Selma Ünal
MWNF Working Number: TUR1_001