[MechaMind]

What happens with a regular mainspring when it is overwound... possibly the hook break soff
What happens to a automatic mainspring when you try to overwind the end slides to the next rest position in the spring barrel

I guess its ment about the outher end finalization.... but that is just a guess


ouuups - same opinion as lysander

 

[MechaMind]

Of course ... I thought this could be a advertizing slogan instead of explaining the full mechanism of preventing an overwind... like the washing agent ..."the whitest white" ... it is not possible to create a true white color nor a true black ( a quasar comes rather close to that but not on earth) - its just to make the customer emotionally "understanding" what the feature means to him...