Woodbridge Antiques has dated this piece to the 1950s.
There is a good fastening pin on the back.

A dazzling brooch - great for a collector of vintage Norwegian designer jewellery.
Condition: Great pre-owned condition. The beautiful enamel is in beautiful condition.
Period: Mid twentieth century.
Measurements: Height: 3cm Width: 3.5cm Weight: 5.4 grams
Weights and measurements are approximate.
Stock Code: 39355
Woodbridge Antiques has dated this piece to the 1950s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page