Antique to vintage French sterling silver napkin ring with guilloche engraved decoration and asymmetrical blank cartouche. A bit of age tarnish, some light surface scratches and it is slightly out of round.
The hallmark has been partially worn away, but it is the post 1838 French Minerva 1st standard hallmark (.950).
Measures 1 3/8" or 3,5 cm tall x 2" or 5,1 cm diameter. Weighs 23,8 grams.