Thanks Hugh, just cheered me up that I might not have overwound. Don't get me wrong I wasn't shaking to the extent of trying to break (I was tempted mind).A TAG of that era, you're not going to have been able to overwind the mainspring. They can break over years of use and sometimes you might get a duff one, but an auto from 2009 is not going to be possible to over wind, it would just slip precisely to prevent over winding. Shaking it that violently so as to break it? Again, that would be pretty odd.

I'm trying to think what I might have done to break it. I simply have no idea why it wont work. Would buying a winder box be worth a shot, or bite the bullet and take it to a genuine dealer or third party to fix.
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