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Omega

Omega 5xx tech bulletin

 

Hi. 

This is my first post on the forum. I'm started to gain interest in older Omega, especially with the 5xx series movements. Beautifully made! But I have a small problem with the center second adjustment of a 565. If the tension spring is too loose, the seconds hand move erratically, bit how tight can it be before it affects the oscillation of the balance? Can someone post a copy of the tech bulletin for this caliber, or a similar in the same family that covers this?

Thanks,

Ketil

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