Guilloche Enamel Butterfly Pin by David Andersen of Norway

Vintage sterling silver butterfly pin by David Andersen of Norway. It is decorated with guilloche enamel in blue, gold and orange. There is no damage to the enamel. There are some reflections in the photos, but no damage. Pin has a locking back. It is very tarnished Hallmarked on the back. Measures a wingspan of 2 3/8" and it is 1 3/8" tall.