Looking for someone who can service these and similar watches

We have several of these clocks at our home. Unfortunately, most of them no longer work because they urgently need service. We have been looking for someone in the Zug area to do this for a long time now. Unfortunately we haven’t found anyone yet. Then we expanded it towards Lucerne/Zurich. Nothing either.

Does anyone know anyone reputable who could service such watches? I’m grateful for every hint