Four gold-mounted intaglio rings

細節
Four gold-mounted intaglio rings
One in citrine with a bearded philosopher in profile to the right; one in cornelian with the profile of a bearded man to the right; one in paste simulating sardonyx with a 17th Century male (possibly Newton) with flowing locks in profile to the left, and one in bloodstone with the profile head of Homer, the mount engraved with foliage and hobnail ornament, all late 18th early 19th Century, three with modern mounts (4)
來源
The first ring William Beckford Collection, Phillips, 9 September 1823, gems lots 381-410, the last ring Schroder Collection, lot 20 (possibly head of Homer)
拍場告示
Only two of the intaglio rings have modern mounts.