Woodbridge Antiques has dated this piece to the 1920s.
The maker's mark is also clearly visible for Charles Henry Dumenil.

A very special antique box, fabulous proportions and a very good heavy gauge of silver. Feels nice and solid when held!
Condition: In wonderful antique collector's condition.
Dimensions:
Height: 2.7 cm approx.
Width: 10.2 cm approx.
Depth: 4.5 cm approx.
Weight: 113.11 grams approx.
Woodbridge Antiques has dated this piece to the 1920s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page