Woodbridge Antiques has dated this piece to the 1910s.
Marked on the back Sterling silver and the silver maker's mark John Aitken & sons working during the period 1903-1918. There is a good fastening clasp at the back.

A perfect gift, made by a collectable designer and in fabulous condition.
Period: c. 1903-1918
Measurements: Width: 3.2 cm Height: 1.8 cm Weight: 3.5 grams
Weights and measurements are approximate.
Woodbridge Antiques has dated this piece to the 1910s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page