Vintage Hans Hansen Sterling Silver and Rock Crystal Box Ring 1970s

A vintage solid silver and rock crystal box ring - Hans Hansen - a rare modernist ring with a central custom square cut clear rock crystal stone bezel set in a heavy gauge shadow box frame above a wide flat shank - this bold design from this well recognised maker is a real text book example and collectors piece of the Modernist era - marked for Sterling Silver and for Hans Hansen of Kolding along with London import marks for Danish Silver Designs Ltd and hallmarked for 1972 - total weight 24.4grms -  dimensions of face 15 x 15 x 15mm - current ring size approx M.5 AU/UK (US=6.25)- 1972 Denmark