This is an early American napkin ring made of coin silver. It is circa 1870--Civil War era. The sterling standard was not firmly in place in this country until well into the 1880's. Coin silver can have a higher percentage of silver (which is 92.5%) or be the same percentage or slightly lower depending on the melted silver coins that were used. What makes this napkin ring unusual, of course, is the shape. The opening for the napkin is about 2.25 inches. The l dimension the other direction is 1.75 inches. It weighs 1.5 ounces-- much more than one might expect since a typical sterling napkin ring weighs about an ounce. The bell-shaped cartouche has a monogram. This is quite an unusual napkin ring.