The Vintage Wrist Watch Company has dated this piece to the 1920s.
The chain comes with two silver fobs...

the second fob is engraved Egypt 1924 on the front and to the reverse, XV/XIX Hussars Troop Football, Winners C4 and is hallmarked for Birmingham 1923.
The 15th/19th The King's Royal Hussars was a cavalry regiment of the British Army. The regiment was formed by the amalgamation of the 15th The King's Hussars and the 19th Royal Hussars in 1922.
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The Vintage Wrist Watch Company has dated this piece to the 1920s.
Specialists in antique and vintage wrist watches and pocket watches
You can view the stock and full dealer information on the The Vintage Wrist Watch Company Profile Page