Panerai been sitting idle-winding

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Hello all, my first panerai a used 00560 has been sitting in its box unwound at my parents place overseas for 5 months - I have now managed to collect the watch and have wound it around 50 times - but still it wont start

Should I keep winding? am slightly nervous of winding it constantly, I haven't reached the point where its not possible to wind it further

thanks
 
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Try shaking it a bit, that usually gets it started. But if it's used it just might need a service.
 
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Give it the "Seiko Shake". Basically a twisting motion with your forearm vertical while holding the watch horizontally.