Fine quality antique figural silverplated napkin ring. 
Realistically cast mouse or rat. 
Hand engraved decoration on napkin ring.
American, circa 19th century, willcox silver company
  Size:
About 2 5/16 in. (11.1 cm) high and 3 in. (12.4 cm) wide at the base. 
  Condition:
Antique uncleaned condition with noticeable indication of age. Wear to silver-plating, dings dents and scratches.