It was listed by Kingsdown Antiques. Sold pieces stay on Sellingantiques as a record of what has passed through, and the next one is rarely far away.
Kingsdown Antiques has dated these Cased Silver Napkin Rings to the Edwardian era.

Measurements:
Height: 7/8" (approx. 2cm)
Diameter: 1 1/4" (approx. 4.5cm)
Measurements of box:
Height: 2 1/2" (approx. 6.5cm)
Width: 4" (approx. 10cm)
Depth: 4 1/4" (approx. 11cm)
Total weight: 242g
In good condition – any dark areas are shadows from the photography.
Kingsdown Antiques has dated these Cased Silver Napkin Rings to the Edwardian era.
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You can view the stock and full dealer information on the Kingsdown Antiques Profile Page