Puckerings has dated this piece to the 1910s.
The shell in turn has a simple circular pique inlay. The shell is bright with a good glossy patina.

The silver brears the hallmark for Birmingham 1914 together with the makers initials L&S for the silversmith, Levi & Salaman.
Excellent condition, measuring 4 1/2" x 1 5/8" x 1" tall.
Item ID: 32913
——————
FREE Worldwide Registered Airmail Directly From London, England
Puckerings has dated this piece to the 1910s.
A quality online collection of fine english antique smalls with free worldwide shipping from london, england
You can view the stock and full dealer information on the Puckerings Profile Page