Woodbridge Antiques has dated this piece to the 1950s.
The back of the brooch has a good fastening pin and here the marks are visible: 925S Sterling Norway with the encircled 'H' mark for Ivar T Holth.

The breathtaking colour of this brooch is superb. The brooch is in super pre-owned condition.
Period: Mid century 1950's.
Measurements: Height: 1.8 cm Width: 6.7 cm Weight: 7.9 grams
Weights and measurements are approximate.
37582
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