Robert Bush Antiques has dated this piece to the 1930s.
They have matching hallmarks for Birmingham 1931 with the silversmiths mark for William Base & Sons.

They weigh 68.7 grams/2.2 troy oz the pair, there are no inscriptions or monograms and they and are in excellent condition.
These napkin rings will come with a certificate of authenticity.
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Robert Bush Antiques has dated this piece to the 1930s.
Antique georgian, victorian & edwardian silverware & collectables, antique boxes and caddies and decorative items.
You can view the stock and full dealer information on the Robert Bush Antiques Profile Page
Robert Bush Antiques is a registered member of LAPADA