Julie Cartwright Antiques has dated this piece to the 1930s.
Hallmarks:

Maker's marks indistinct.
Birmingham Assay Mark.
Lion Passant.
Date letter "G" for 1931.
Condition:
Very good.
The bevelled glass is in great shape without loss.
The enamel back is in very good condition. No loss to the enamel, minor surface wear commensurate with age and use.

The silver handle in excellent condition.
Dimensions:
Length: 24 cm / 9.5 inches.
Mirror: 11cm x 9cm / 4.2 inches x 3.2 inches.
Delivery:
PLEASE DO NOT FORGET TO ADD POSTAGE AT CHECKOUT.
Postage UK: £8 Special Delivery Next day.

Postage overseas: £25 International Signed For.
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Julie Cartwright Antiques has dated this piece to the 1930s.
You can view the stock and full dealer information on the Julie Cartwright Antiques Profile Page