LATE ROMAN GOLD RING WITH NIELLO CHI-RHO MONOGRAM. Ca. AD 300 - 600. A gold ring with long tapering shoulders extending into a slender flat-section hoop. The circular flat-topped bezel features a Chi-Rho monogram inlaid in black niello. Size: D:14.48mm / US: 3 1/4 / UK: G; Weight: 1.98g Provenance: Private central London collection; previously acquired on the UK art market before 2000.