Enquiry – where to find replacement for vintage pusher button – Tissot T12 Chronograph

Good day WatchSeekers! Need to ask for a help – recently bought vtg Tissot T12 chronograph as interesting restoration project. Servicing mechanism and bringing the case & crystal back to its former glory is not the biggest challenge for me (lack of skills but great patience & motivation to learn) since the case is missing one pusher, which is a problem, as I do not know from where to start. I’d like to ask, if you are familiar with any places (already tried e..y and e…y – but without…

Enquiry – where to find replacement for vintage pusher button – Tissot T12 Chronograph