Greek, 5th - 4th century BC.
Ring size L 1/2 UK / 6 UK.
Weighs 3.7 grams.
The elliptical bezel engraved with a seated ibex its head looking across its back.
Provenance; The Abelita family collection, purchased during 1980-2015.
For a similar example see the collection of the British Museum, registration number: 1888,1020.6.
https://www.britishmuseum.org/collection/object/G_1888-1020-6