Luke Honey Ltd has dated this piece to the Victorian era.
.. Howard Staunton's facsimile signature... JAQUES & SON, LONDON (no key)

King: 10.1cm (4 inches) high
Pawn: 5.4cm high
Box: 20.6m wide, 9.7cm high, 5.6cm deep
Reference: Alan Fersht, Jaques and British Chess Company Chess Sets, Kaissa Publications, 2010, page 9 for a similar 1890-95 green label 'no hyphen in chessmen, both kings stamped...'
Stock Reference: AS 1969
Luke Honey Ltd has dated this piece to the Victorian era.
You can view the stock and full dealer information on the Luke Honey Ltd Profile Page