CARTIER “Panthère.” Bracelet in 800-th silverium and 750-th yellow gold, featuring articulated rectangular links joined by rings, with a secure ratchet clasp (minor scratches). 1990s. Signed and numbered 262110. Master Goldsmith: Lucien VACHEY (registered October 12, 1963). Length: 20 cm - Width: 0.6 cm Gross weight: 42.9 g Note: Lucien Vachey, a Parisian jeweler and goldsmith, began developing innovative techniques for jewelry making as early as the 1960s. In particular, he pioneered Silverium, an alloy of silver and platinum that is given its characteristic black hue through a specific process. The silver, blackened throughout its mass, exhibits a dark, uniform color while retaining the metal’s properties and malleability. This expertise led him to work for major houses such as Hermès and Cartier, for whom he created numerous pieces. He collaborated notably with Cartier in the 1980s and 1990s, and the brand used this material in several pieces from the Panthère collection.