Julie Cartwright Antiques has dated this piece to the Victorian era.

Hallmarks:
Unmarked as was very often the case with small scent bottles but tested as silver.
Dimensions:
Height (excluding chain): 5.5cm / 2.1 inches.
Diameter: 4cm / 1.5 inches.
Condition:
Very good.
No loss to the silver casing.
Strong hinge.
Complete with stopper.
Postage:
PLEASE DO NOT FORGET TO ADD POSTAGE AT CHECKOUT.
Julie Cartwright Antiques has dated this piece to the Victorian era.
You can view the stock and full dealer information on the Julie Cartwright Antiques Profile Page