Puckerings has dated this piece to the 1910s.

The firm continued under the same name and this pair would have been made around 1900 / 1920.
The bridge is engraved Wm Geo Bassett, I am unsure if this was the retailer or the original owner.
Great optics and in lovely condition measuring 4 3/4" x 2 1/4" x 5 1/4" expanding to 6 5/8".
Item ID: 40165
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