18kt white gold (750 thousandths) and platinum (900 thousandths);
Centered with three diamonds, each weighing 0.06 carats;
Shouldered with rose-cut diamonds for a total weight of approximately 0.20 carats;
Weight: 3.64 g;
Size: 51 (can be modified);
Plate dimensions: 11.7 x 10 mm;
Era: 1930s.