Unusual Set of 6 Antique Silver Plated Napkin Rings

This is an unusual set of 6 antique silver plated napkin rings. Housed in their original box. Each napkin ring is triangular in shape and is engraved with rods scrolls and leaves. c1880 British made. Each are stamped with a diamond registration kite mark. The original box has a double opening flap that is lined with pale blue silk. The base is sectioned with royal blue velvet, pale blue sides and base. These have been replated.