Ca. 100-300 AD. A dark stone intaglio engraved with a scene of a winged God holding a trident, seated on the deck of a galley with a head-shaped stern and oars in the water; set in a bezel of a later gold ring comprising a round hoop with twisted decoration.Size: D: 17.13mm / US: 6 3/4 / UK: N 1/2; 6.67gProvenance: Property of a London Ancient Art Gallery; formerly in the famous Alison Barker collection, a retired London barrister; acquired between early 1960s to 1990s.