Vintage rolled gold Art Nouveau style abstract modernist design panel collar necklace

Gorgeous vintage rolled gold panel necklace with a lovely abstract with Art Nouveau / Arts & Crafts style design. Pieces like this, with this type of extension chain and panels are often made by German makers such as Andreas Daub (AD) or Kordes and Lichtenfels (K&L) for example. However, this one has no stamps or signatures.

The necklace fastens with spring ring clasp and extension chain, so its length is adjustable between about 15 and 17 inches.

It is in very good vintage condition, with lovely shiny rolled gold surfaces.