Puckerings has dated this piece to the 1890s.
They are marked A & D S for Allen and Darwin of London and Sheffield.

The set comes complete in their original Mahogany presentation case with the original silk and velvet lining.
Excellent condition, each knife measures 9" long and each form measures 7 3/4" long. The case measures 15 1/2" x 10 1/2" x 2". Late Victorian in era, c.1890.
Item ID: 36010
FREE Worldwide Registered Airmail Directly from London, England
Puckerings has dated this piece to the 1890s.
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