BYZANTINE GOLD RING WITH NIELLO MONOGRAM. Ca. AD 600. A gold ring composed of a slender round-section hoop and a circular bezel inlaid in black niello with an interlaced monogram. For similar see: J. Bagot, El legado de Hefesto: A Memorial to a Private Collection of Ancient Rings and Glyptics, n. 594. Size: D:16.71mm / US: 6 1/4 / UK: M; Weight: 4.48g Provenance: Private central London collection; previously acquired on the UK art market before 2000. This item has been cleared against the Art Loss Register database and comes with a confirmation letter.