Here is large, modernist Sterling guilloche enamel brooch by the renowned Norwegian silversmith Ivar Holt.  Two pieces have been bent and attached at the centre, giving the appearance of a ribbon. It has a gold wash on the edges and the back.

Condition: Excellent, no visible damage. No chips or scratches. Rollover safety clasp. Gold wash is tarnished.

Marks: 925S, H in circle, Sterling Norway

Size: 2.5" ( 6.2 cm) wide

Year: 1950s?