This listing is for a beautiful Vintage Uncas silver plated signed clear rhinestone cluster cocktail ring. Size 7.5. pre-owned but in very good condition. See all photos for visual details. Uncas is an American Jewelry Craftsman founded in 1911. Uncas made silver, gemstone and faux costume jewelry and can be identified as having a signed of a “U with an arrow through” (1947 first trademarked) NB the arrow has a 90% angle at the end. An arrow with a two pint finish was registered in 1922. Or a U with two arrows pointing towards it. Registered in Uncas in 1961. the arrow with the two arrows pointing towards the U was first registered in 1947