Vintage David Andersen Norway Sterling 925S Blue Guilloche Enamel Leaf Brooch

This iconic mid-century piece features vibrant, glossy royal blue enamel over an engine-turned engine-engraved silver pattern that catches the light beautifully. Markings: Fully hallmarked on back: D-A 925S Sterling Norway with scale mark. Condition: Excellent vintage condition. The enamel is intact with stunning luster and no major chips or cracks. The pin stem and rollover clasp are in smooth working order. Original vintage patina preserved—unpolished.