This sweet butterfly pin has royal blue guilloche enamel wings and a black body and eyes. The edges of the pin are delicately scalloped; the antennae a simple curve. The metal is sterling silver with a gold wash (vermeil); the maker is David Andersen, Norway's best-known jeweler. The workmanship and quality are fine. This pin has a secure C-catch. It dates from between 1950 and 1975. It is in excellent original condition. This pin measures 3/4" X 1 1/4" and weighs 4.1 grams.