Woodbridge Antiques has dated this piece to the 1930s.
The maker's marks is also clear for the silversmith: Adie Brothers.

A superior tray, with no engraving or embossing - simply lovely plain polished silver.
Condition: In lovely antique collector's condition.
Hallmarks & maker's marks: Birmingham 1926 by Adie Brothers.
Dimensions:
20.8 c 20.8 cm approx. Height: 2.4 cm approx.
Weight: 375 grams approx.
Woodbridge Antiques has dated this piece to the 1930s.
Specialists in quality antique silver, fine jewellery & accessories
You can view the stock and full dealer information on the Woodbridge Antiques Profile Page