18K (750) gold collar watch with polychrome enamel decoration featuring a young girl in profile, the collar highlighted with rose-cut diamonds, held on an 18K gold brooch-barrette adorned with a quadrangular emerald set with old-cut diamonds and smaller calibrated emeralds. Late 19th-early 20th century Swiss and pre-1919 French regional work. Diameter: approx. 2.3 cm. Brooch length: approx. 3.2 cm. Gross weight: 20 g (very slight enamel damage). A late 19th century enameled watch