Rare 18th Century French Souvenir Ring Circa 1780 
Magical Souvenir ring, a rectangular plaque with rounded corners,  the word Souvenir spelt out in tiny seed pearls, within an oval frame, and below a wreath. 
Above the oval stands a tiny mother of Pearl urn, with more seed accents. 
The blue ground is made from foil, with a stamped pattern 
These rings are so fragile that few have survived 
Face measures - 29mm x 18mm 
Weighs - 5g 
Size - 
In good antique condition