Bar brooch with 3 brilliant-cut diamonds totalling approx. 0.28 ct, WHITE-STW (H-J)/SI, 14K white gold, 4.2 g, L: approx. 59.9 mm, W: approx. 2 - 3.6 mm, 20th/21st century, minimal signs of wear, with hallmark and engraving '1666'.