Here is nice Sterling silver modernist ring by the Danish silversmith Henning Munnecke, whose workshop was registered from 1953 to 73. It features a strictly simple rectangular top of abalone, a design which was also (first?) produced by the Danish abalone specialists, Palle Bisgaard and Arne Johansen.
Condition: Excellent, no visible damage
Marks: HM Sterling
Size: to fit finger size: UK small O, US 7.25, Eu 55