Here is an innovative design by Karl Erik Palmberg, who was lead designer for the Swedish smithy Alton in the 1950s to 1970s.   It is not silver, but neither does it look pewter, and the coloured inner surface of the dish may or may not be enamel. Apologies, but the materials are a real mystery. What is not in doubt however, is the superb design and condition of this lovely ring. Split shank, adjustable size

Lower postal rate applies, difference refunded after dispatch

Condition: Excellent, no visible damage, looks unused. 

Marks:  Alton, K.E.Palmberg

Size:  finger size adjustable. Top of ring  2.5 cm (1"") across

Year: 1970s?