Margot Van Voorhies worked with enamel of the most unusual beautiful color and design. Her work is compiled in the book THE ART OF MEXICAN ENAMELWORK by Pennny C. Morrill. This one is named Noble 5404. It is so incredible with a primary green with glowing mixed colors sparking in all directions. These enamels being of vintage age pre 1970 are mostly found with loss. However this bracelet is totally without loss and original. The safety chain is newly provided but safety chains do not detract from value or add to it. The size is mammoth at 2.25in. tall and has a heft of 172 grams of pure quality. The length is 7.25in. If you collect Mexican silver this is a must have.