A SWISS ENAMELLED GOLD VINAIGRETTE BY SEN? & DETALLA (FL. C. 1795-1805), MARKED, GENEVA, CIRCA 1805 formed as an enamelled butterfly, with translucent red enamel sides and base within white enamel frames and taille d’épargne black and white enamel chevron borders, inside a hinged scrolling foliate grille, suspended on a long gold chain with shaped taille d’épargne enamelled floral links and matching ring 1 ? in. (40 mm.) wide excluding chain
A SWISS ENAMELLED GOLD VINAIGRETTE BY SENé & DETALLA (FL. C. 1795-1805), MARKED, GENEVA, CIRCA 1805 formed as an enamelled butterfly, with translucent red enamel sides and base within white enamel frames and taille d’épargne black and white enamel chevron borders, inside a hinged scrolling foliate grille, suspended on a long gold chain with shaped taille d’épargne enamelled floral links and matching ring 1 ? in. (40 mm.) wide excluding chain