These sterling jewelry items are called Siam Sterling and Nielloware they were make in Siam which is Thailand now. The jewelry items called Siam Sterling Nielloware are very unique and very collectable . These gray-black charcoal items reflect facets of recent and ancient Thai culture and folklore. Most Niello was made from early 1930 to 1990. This set features Mekkalah Goddess of Lightning A lovely set of tie bar and cuff links. For you from the High Plains of Kansas!