Possible damage due to magnet. Opinions needed.

[Fox red lab]

Recently I noticed that when I wind my 116710 on the weekends after about 20 turns it becomes harder to wind ie) more resistance when turning the crown. Not incredibly more but still a noticeable difference. This is different from the last 4 years where I would wind it 40 times and every turn would feel the same.

Possible reason could be that a few weeks back I set my watch on top of my money clip that has quite a strong magnet in it. So strong it stopped the watch for the hour I had it sitting on it. It seems to keep good time, losing 3 seconds per day.

What does everyone think?

Thanks