Corvidae Antique has dated this piece to the Victorian era.
The padlock is stamped M&N 15C and there is at least one worn "15" on the links.
It's rare to find these padlock bracelets in 15-carat gold, they're almost always nine carat.

The bracelet is in very good antique/vintage condition, with light surface wear appropriate for its age. The padlock opens easily when the end is depressed and snaps shut securely with a click.
Length: 8 and a half inches (approx 21.5cm).
Width: 7mm.
Padlock size: 1.4 x 2.1cm.
Weight: 17.2g.
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Corvidae Antique has dated this piece to the Victorian era.
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