Vintage Bjorn Weckstrom for Lapponia Sterling Silver Amorphic Landscape Ring

A vintage solid silver amorphic ring of a rare crushed square topographical design with textured face -  a bold textural design typical of Weckstrom's topographical work - marked 925 for Sterling silver and for Bjorn Weckstrom for Lapponia of Helsinki and dated 1970 - total weight 15.1grm - dimensions of face 21 x 18mm - current ring size P AU/UK(USA 7 1/2) - 1970 Finland