columbia soundbox no9

[leoburdorf]

Hello,

I bought a columbia portable gramophone with a Columbia no 9 Soundbox. The thumbscrew is missing !!
I asked several internet stores, but no one has a thumbscrew on stock. Does anybody know the exact measures (metric)or other soundboxes that have the same thumbscrew or even still better has anybody a thumbscrew to sell.

Greetings,

Leo

PS, I hope this is the good category to post this kind of questions.

[Phono48]

I'm in England, but if you have no luck where you are, I'll be happy to post one to you.

Barry