Which screw does my Goldring Lexus Gramophone accept for the Soundbox?

Which screw does my Goldring Lexus Gramophone accept for the Soundbox?

Answer:

Given the age of these products, our records are very limited which we hope you can appreciate.

We do still have access to a classic “Juwel Electro” model which was made in Germany before the company moved to the UK (pre-1933), but they do all appear to take a similar looking thumbscrew. Our Goldring soundbox is compatible with a standard M2 thread; specifically it takes a knurled thumbscrew with a 6mm long, M2 metric thread.

Of course, your soundbox might take something slightly different, but this should give you a good starting point. There seem to be multiple versions of the Luxus model from different eras, so the thread size may have changed along the way.