The Vintage Wrist Watch Company has dated this piece to the 1880s.
The watch has a key-wound movement, signed John Elkan, which is working nicely. The movement is protected by a fitted inner cover.
A copy of the advert is attached (credit to The British Library Board) but this is for interest only, we do not have the original and it is not included in the sale.

The watch measures 50mm diameter excluding the stem and the loop. The case is silver and there are hallmarks inside the case backs for London 1886 with a case maker's mark for the Coventry silversmith William Hammon. The case has a minor mark to the bezel and some fairly gentle unevenness to the back but overall the condition is acceptable for such an early piece.
The watch glass is in good condition.
The dial is signed John Elkan, 35 Liverpool St, City, London. It is in very nice condition.
The watch will be sent in a new presentation box.
The Vintage Wrist Watch Company has dated this piece to the 1880s.
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