This lovely American antique sterling napkin ring was made by the famous Shreve Company of San Francisco (in business since 1852). The napkin ring is hallmarked Shreve and also sterling (last picture) There is a fine waved border applied to both ends of the ring. Note also that the interesting old name "Birdetta" is in the oval cartouche. The ring is 1.75 inches in diameter and 1.5 inches wide. It is quite heavy at 1.8 ounces and is in beautiful condition. Shreve has always done quality work.