This is a vintage David Andersen enamel guilloche brooch, in green enamel.
A leaf motif, designed by Willy Winnaess.
It measures 6.8 cm long x 1.9 cm (at widest part).
With a pin and c clasp.
In Sterling Silver, I think with a pale gold wash.
Fully marked on the reverse side with:
scales D-A 925S
"W" for Willy Winnaess
Dating to around the 1950s.
The condition is very good, the pin is firm, and there is no damage to the enamel. Please note that there is some tarnishing to the metal however I have not polished it as I know some people prefer a patina to the metal.