This is a nice find! Rare to find a piece from Stone Sterling Silver Co. (New York, NY, 1896-1900). This sterling napkin ring is in excellent condition.The concave napkin ring with two beaded borders has no dings or dents. This piece is 1 5/16" tall and 1 5/8" in diameter. NO monograms Stamped at the edge with sterling and SSSCo with an arrow going through it. Weighs 13.5 grams.