Puckerings has dated this piece to the 1910s.
The case once opened, reveals the cream silk to the lid printed "Walker and Hall - Sheffield".

The napkin rings are both shaped and pierced or reticulated, unusual, stylish and decorative. Each has a full English hallmark for Sheffield 1912, a true antique pair.
Item ID: 40261
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Puckerings has dated this piece to the 1910s.
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