Vintage Norwegian Silver and Green Enamel Rasmussen Clip Earrings 1960s

A vintage pair of solid silver and emerald green enamel clip earrings - each earring consisting of a rounded trapezoid shape with a fine guilloche ground decorated with a pattern of silver balls reminiscent of braille with clip fittings - marked for Sterling silver and for Karl A Rasmussen of Oslo - total weight  of the pair 9.7grms - overall dimensions 22 x 22mm - c.1960 Norway