Real Vintage Jewelry- Vintage ring stamped

An original vintage piece made by The Uncas Manufacturing Company, The UMC uses a U with an arrow through it as its jeweler's mark. The company changed its original jeweler's mark and started using the symbol in the mid-1920s. Uncas is a family-owned business that was founded in 1911. The company's headquarters is located in the state of Rhode Island with offices, showrooms and warehouses in California, Florida and Hong Kong, China. ❤️ADJUSTABLE•• size 8/8&12 on mandrel