I've touched on this before, and those visitors to my shop will have heard me say this repeatedly also.
OVERWINDING IS A MYTH.
Your watch or clock cannot be overwound. If it will not run when it is fully wound up, that is an indicator of something seriously amiss. Extreme wear and tear, lack of lubrication, crud, magnetisation, and about 200 other things will stop a mechanical watch or clock.
Overwinding is not one of these.
As you were.