Medieval French Gold Ring with Agnus Dei

The ring has a circular bezel engraved with the name “MARTINUS” around a central image of the Lamb of God.
France, 2nd half of 15th Century
American Ring Size: 7.5
Height: 23 mm. (0 15/16 in.)
11g.
Ex: French market, acquired by prior owner, 2017. Acquired by Antiquarium Ltd. on Belgian/ European market, January 2018
(#rn5473med)
Exhibited:
BRAFA Art Fair. (Brussels, 26 Jan- 2 Feb 2020)
Comparandum:
Spier, Jeffrey; Late Byzantine Rings, 1204-1453 (Wiesbaden, 2013) p.56, no.35