Julie Cartwright Antiques has dated this piece to the 1920s.

Hallmarks:
JE for Jesse Earl of St John Street, Clerkenwell, London EC
London Assay Mark.
Date letter "e" for 1920.
Lion Passant.
Dimensions:
Height to the top of the bow:12cm / 5 inches.
Diameter: 10 cm / 4 inches

Aperture diameter: 7cm / 3 inches.
Condition:
Good throughout.
Possibly some minor repairs on the back of the bow, barely noticeable.
No creases to the plain silver frame.
Strong easel.
Postage:
PLEASE DO NOT FORGET TO ADD POSTAGE AT CHECKOUT.

Postage UK: £8.00 Special Delivery Next day.
Postage overseas: £18 International Signed For.
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Julie Cartwright Antiques has dated this piece to the 1920s.
You can view the stock and full dealer information on the Julie Cartwright Antiques Profile Page