The Vintage Wrist Watch Company has dated this piece to the 1940s.
The medallion was awarded to those who passed three of its examinations.

The medallions and labels could be purchased in bronze, silver or gold with the silver costing 7/6 which was a significant amount when the average weekly age was 30/-.
A label could be earned by a medallion holder for each successful re-examination at intervals of not less than 12 months. Each label carries on the front the year of the re-examination, and on the reverse the same registered number as on the medallion.

The labels on this watch chain date from 1926 through to 1940 which suggests Mr Hart was very diligent with his re-examinations. The medallion and each of the labels is also hallmarked.
Total length 39cm including the T-bar and the clasp. Total weight 34.7g.
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The Vintage Wrist Watch Company has dated this piece to the 1940s.
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