17th-18th century AD. A gold finger ring with ribs to the shoulders, stepped discoid bezel with complex monogram merchant's mark flanked by initials 'R R'. 21.90 grams, 28.87mm overall, 20.26mm internal diameter (approximate size British V, USA 10 1/2, Europe 23.77, Japan 22) (1"). Property of a central London collector; acquired from a large private collection formed in the 1980s. Very fine condition. A large wearable size.