Aramis Antiques has dated this piece to the 1910s.
The box opens and shuts with a good click. Underneath it is engraved Regn Applied For meaning that ASPREY applied for a patent for this design. This was made at the end of the Edwardian and start of the George V eras, when quality and refinement were the name of the day. And it’s by ASPREY, so it’s gorgeous.
Aramis Antiques has dated this piece to the 1910s.
You can view the stock and full dealer information on the Aramis Antiques Profile Page