10th-12th century AD. A gold finger ring with discoid bezel, niello-inlaid nimbate bust of a female saint flanked by 'CN/X?'. 4.14 grams, 20.84mm overall, 22.19mm internal diameter (approximate size British M 1/2, USA 6 1/4, Europe 13.09, Japan 12) (3/4"). From a London gentleman, formerly in a Swiss collection 1990s; accompanied by an independent specialist report and valuation by graduate gemmologist and jewellery expert Anna Rogers, GIA GG, BA, Gem-A, ref. no. 170480/07/12/2020; this lot has been checked against the Interpol Database of stolen works of art and is accompanied by AIAD certificate number no. 10521-170480. [A video of this lot is available to view on TimeLine Auctions website.]