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This is a nice ancient Roman silver finger ring, dating to the 2nd century A.D. It is of penannular form, decorated with two facing snakeheads. A similar ring found in Oxfordshire discussed here PAS-942FE3 and Suffolk SF-8BEF14. This snake ring is of Johns Type Bii, there are numerous parallels from the Snettisham jeweller's hoard, (Johns, 1997, 36-37 and 100-105, nos243-274).
The snake during this period was associated with healing, the goddess Salus and Asclepius all have associations with snakes.
OBJECT: Finger Ring
DATE: c. 2nd century A.D.
RING SIZE: 7 (US) O (UK)
SIZE: 22mm x 24mm x 3mm
WEIGHT: 5.2 grams
PROVENANCE: Ex. European Private Collection.