Really striking face, enamel on copper. Wonderful design – reminds me of Modigliani. Blue and gold enamel on copper; reverese signed Teriotis, Que Canada. Likely 1960s. There were a lot of enamellists working in Quebec from the 60s on. Probably DePassille-Sylvestre is the best known and most widely collected.
IntoTemptation.....jewellery musings 
L’artiste des émaux sur cuivre Teriotis est Richard Thériault et Edouard Otis, Duvernay Laval,
Mais les pin on été fait par Richard Thériault
Richard Thériault décédé le 16 septembre 2012 a l’âge de 82 ans .