It was listed by Corvidae Antique. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Corvidae Antique has dated this piece to the Edwardian era.

In very good antique condition, there is a little wear to the platinum front and minor overall surface wear. There would originally have been a safety chain which is no longer present.
Size: 4.8 x 0.6cm.
Weight: 2.5g.
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Corvidae Antique has dated this piece to the Edwardian era.
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You can view the stock and full dealer information on the Corvidae Antique Profile Page