Woodbridge Antiques has dated this piece to the 1960s.
The symetrical design features a large silver elliptical shape surrounding an oblong block decorated with twelve evenly spaced aqua enamel spots.

So space age, it is out of this world!
The pendant is marked as 813 grade silver, with the Kultateollisuus Ky makers mark and the date code for 1965, and is in very good vintage condition. It comes with a chunky 23" chain, with no fastening.
Measurements: Width: 4.8 cm Height 3.5 cm Depth 4.5 mm Weight: 21.5 grams
All weights and measurements are approximate.
Woodbridge Antiques has dated this piece to the 1960s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page