Vintage Jakob Bengel Art Deco 1930s machine age collar necklace with early plastic transparent green circles, antique gold tone links ethnic There are two short lengths

There are two short lengths of silver tone extension chain at the back so that the length can be adjusted between about 15 and 17 inches

This piece is unsigned as is often the case

The last picture shows Princess Diana's stepmother Raine Spencer sporting one of this range of brooches outside Diana's family home of Althorp in the 1980s

This is a collectable design piece

with lovely striations in the turquoise glass

Vintage Jakob Bengel Art Deco 1930s machine age collar necklace with early plastic transparent green circles, antique gold tone links ethnic There are two short lengthsVintage Art Deco early plastic ring 'bead' and antique gold tone machine age choker necklace. This is such an unusual piece the chain links are clearly from the Jakob Bengel factory in Idar Oberstein, but I have not seen this type of early plastic used often in their pieces. These choker riviere type necklaces sit around the neck or decolletage beautifully and styles like this can be layered in the style of Anna Wintour. The necklace fastens using a