Diamond bracelet, Cartier, circa 1925 - Sotheby's.  

The pierced geometric plaques set with circular-cut, square and baguette diamonds, length approximately 172mm, signed Cartier and numbered, later case stamped Cartier. Estimate: 7,000 - 10,000 GBP

Sotheby's. Jewels. London | 11 Apr 2013 www.sothebys.com