Late 19th-early 20th century AD. A black bone(?) ring comprising a D-section hoop with flared shoulders and ellipsoid bezel; the hoop with inset white bone fillet, triangular silver inserts to the shoulders, white ring to the bezel and inset silver panel with reserved 'PR' on a hatched field. 1.88 grams, 21.30mm overall, 16.83mm internal diameter (approximate size British M, USA 6 1/4, Europe 13, Japan 12) (1"). From the collection of a European gentleman living in South London; acquired 1970-1980. Fine condition.