Double-clip brooch that transforms between yellow gold (750 - Lot 148

Double-clip brooch that transforms between yellow gold (750 thousandths) and white gold (750 thousandths). Decorated with ribbons, coiled scrolls, and fan-shaped motifs set with two old-cut diamonds and a pavé of 8/8-cut stones. The entire piece is edged with red cabochon-cut imitation stones and a few rubies. Eagle-head hallmarks. Made circa 1940–50. Dimensions: 56 x 45 mm. Weight: 32.4 g Oxidation marks. The clasp mechanism needs tightening. Pins show signs of deformation. Stones have scratches, and some have cracks. Includes a steel pin protector. The clip system (double back clasp for brooches) was introduced in the 1930s. It is used in single, double, or combined configurations via an invisible mechanism. It became a signature feature of jewelry from major houses such as Cartier, Van Cleef & Arpels, and Boucheron.