JAKOB BENGEL
Art Deco Necklace 
Chromium plated brass & galalith
Length: 49 cm (19.2 in) Width: 3.8 cm (1.5 in)
Ball: 3.6cm (1.4 in)
German. Circa 1932
Literature:
Art Deco Schmuck Jakob Bengel, 2002
Christianne Weber, p.146 & 147
Bengel Art Deco Schmuck, W.Lindemann, 2007 cat no 8 & 10