Gorgeous signed vintage David Andersen Norway guilloche enamel dome ring

Gorgeous signed vintage David Andersen Norway guilloche enamel dome ring. Seriously the most vivid green enamel - two toned rich kelly and lime green enamel bands in five sections. Adjustable - the band isn’t soldered together. A bit of wear on the enamel in a couple spots - unfortunately expected on an enamel piece of this age. Stamped David-Andersen Norway sterling 925S, size 6.75, 6.15g.