Puckerings has dated this piece to the 1890s.

The lens has a brass cover and the eye piece has a little integrated shutter to protect the eye hole.
This example is lucky enough to have a wonderful engraving, having been presented to George D. Pelly and dated 1893 (this was purchased with another engraved George Petty, clearly the same person but with one engraving misspelled).
Excellent condition, measuring 6" in length extending to 16 1/2" in length.
Item ID: 32465
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