1930's Machine Age Art Deco Necklace (probably by Jakob Bengel)

Hi everyone!
I'm back with a Machine Age necklace. This one has a snake chain and a pendant made of chrome tubes and black galalith. Although the clasp is not typical of Jakob Bengel necklaces, I believe it is a genuine 1930's piece by the famous German jewelry designer.
If anyone has an opinion about it, I'd be glad to read it! ;)