Julie Cartwright Antiques has dated this piece to the 1910s.
Pale oak back and easel.

Hallmarks:
CSG&Co for Charles S Green & Co Ltd.
Birmingham Assay Mark.
Lion Passant.
Date letter "u" for 1919.
Dimensions:
Height: 20cm / 8 inches.
Maximum width: 13cm / 5 inches.
Aperture:
Height: 17cm / 6.5 inches.

Width: 10.5cm / 4 inches.
Condition:
Good.
A little surface wear, commensurate with age
Good set of marks.
Original solid wood back.
Postage:
PLEASE DO NOT FORGET TO ADD POSTAGE AT CHECKOUT.
Postage UK: £8 Special Delivery Next day.

Postage overseas: £17 International Signed For.
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To pay by credit or debit card over the phone or by cheque, please contact me on 01449 760 585.Hallmarks:
Julie Cartwright Antiques has dated this piece to the 1910s.
You can view the stock and full dealer information on the Julie Cartwright Antiques Profile Page