3rd-4th century AD. A silver ring with carinated hoop, conical shoulders with deep flutes ending in scrolls, raised oval cell set with intaglio jasper gemstone bearing profile bt of an emperor or young Hercules left, a diadem bound with two ribbons behind neck; a marriage. Cf. Reva-Slokoska, L., Roman Jewellery, Bulgaria, 1991, items 210-212 and 254-256; see Demandt, A., Engemann, J., Imperator Caesar Flavi Constantin - Konstantin der Grosse, Mainz, 2007, for discsion on the Constantine portraits. 24.42 grams, 30.67mm overall, 20.79mm internal diameter (approximate size British O, A 7, Europe 14.98, Japan 14) (1 1/4"). From the late Alison Barker collection, a retired London barrister; from her collection formed 1960s-1990s.