Charles Holl was a prestigious French jeweler whose workshop commissioned many of Cartier's and Van Cleef & Arpels masterpieces during the height of the golden era of jewelry in the 1930's. His style, expertise and craftsmanship was an appropriate fit for the top jewelry maisons. This is on display with this functional and practical accessory, transforming the everyday into a work of art. Featuring etched 18k gold enclosed by onyx. Signed, numbered and stamped with French hallmarks.