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All,
I purchased a 3520.53 recently and it was said to have been serviced Jan 2024. Previous owner said that start/stop pusher was replaced during service.
After all day at work, amplitude is around 225-240 with the rate being -12/+3 with up to 0.5 beat error.
After a 30-45 minute walk it was more wound and has amplitude of up to 282, with rate no more -6 and the beat error 0-0.2.
Chrono on/off is about 18* amplitude difference with sometimes only 0-6* difference.
Just wondering if I…
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