Modernist de Passille Sylvestre Optical illusion necklace

Made in Quebec, Canada, vintage circa 70s, modernist necklace signed de Passille Sylvestre, a renowned masters of enamel jewelry, the necklace is made out of yellow gold plated metal with beautiful enamel work featuring optical illusions , beautiful in its simplicity, a rare find! Condition: pre-owned vintage condition, some surface wear and loss of gold plating signs as seen in the photos, from a non-smoking environment. Measurements: 45 cm long, pendant 4.5 cm.