Colin Brand Antiques
Web site: https://www.colinbrandantiques.co.uk/
Antique Jaques & Sons 'In Status Quo' travelling chess set. Folding mahogany travelling chess set stamped "Jaques & Sons Patentees London. In Status Quo Chess Set
These were made for train and ship journeys in the late 19th century with a mechanical locking system that's allows the pieces to be saved for future play and secures whilst travelling.
The chess pieces are made of bone. All in full working order