Aramis Antiques has dated this piece to the 1920s.
Oak easel back giving landscape and portrait options for display
Clear hallmarks for Birmingham 1924
Makers mark for W J Myatt & Co
Plain smooth silver surround with silver bound edges
Blue silk interior
Excellent condition
Internal image size 13.5cm x 8.25 cm/5.5inx3.5in.
Aramis Antiques has dated this piece to the 1920s.
You can view the stock and full dealer information on the Aramis Antiques Profile Page