A wonderful Paris armorial plate.
 Central reserve is painted with "La Belle Feronniere" 
or portrait of an unknown woman.

 Now in the the Louvre, Paris.
 Painted by Leonardo DaVinci circa 1490. 
Once though to be Cecilia Gallerani one of the mistresses of the Duke of Milan or possibly Beatrice D'este.
 
The arms are that of the ARCHINTO family of Italy.
(Count ) Conti di Tainate,
(Marquis) Marchese di Parona.
 
 
 
Highly polished gold work on a bleu-celeste ground. 
Measures approx 9 Inches wide.
Perfect condition. 
No factory mark.
Possibly Boyer, 
Paris.