Teppaz turntable adjustment knob

Button for adjusting either the volume or the tone on the following Teppaz brand record players:

Balad', Bi-Balad, Pil Balad', bb-Matic, Tc matic 100, Tc matic 200, Tc matic 400, T200, T400, Teppy, Oscar Major, Tourist Major, Major Stéréo, Rio, Mini, Gala

New parts but from a stock of more than 40 years!!!