David Andersen Indigo Blue Enamel Pin in 925S Sterling Silver Norway

Vintage 1960s sterling silver pin by Norwegian artist Karl Jorgen Otteren for David Andersen. This is a highly collected piece done in sterling silver with indigo blue enamel work. Measures 1 7/8" in diameter.  Locking clasp on the back. Weight: 21.6 grams. Well hallmarked on the back.