3rd century AD. A silver ring comprising a D-section hoop with flared shoulders, ribs and scroll detailing, discoid bezel with central cell, inset carnelian with intaglio profile bust of Neptune (Greek Poseidon) bearded with dolphin. Cf. Ruseva-Slokoska, L. Roman Jewellery, Sofia, 1991, item 245. 10.33 grams, 26.6mm overall, 18.2mm internal diameter (approximate size British P 1/2, USA 7 3/4, Europe 16.86, Japan 16"). (1"). Property of a gentleman; acquired in the late 1960s-early 1970s. Very fine condition.