This style was produced prior to, and following the Second World War. The enamelling of chrome bracelets with geometric and naïve designs was a popular treatment. They were hand-made and were a step up artistically from the mass-produced chrome and Bakelite lines.
Comparable works came from the Perli-Werkstatt in Schwäbisch Gmünd, Kollmar & Jourdan in Pforzheim and A.G. Bunge in München.
Cp.: Ginger Moro: European Designer Jewelry, 1995, p.134f.; Ch. Weber, R. Möller: Mode und Modeschmuck 1920-1970 in Deutschland, Stuttgart 1999, p.154.