u/Beneficial-Fun-2796

I have two watches with broken balance staff, the movememt is 3135 with the peculiarity that the stud and regulator are "inward facing" making it look like free sprung. I look through alix, but everything has the "clasic" outward facing stud and regulator.

Does anyone know the factory/brand i have to look for?

Im happy with a couole spare balace staff, but i wouldnt mind getting a complete balance wheel.

Thanks in advance