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Hi:
I'm looking to purchase used Sinn 757 in excellent condition. It keeps great time but I noticed that the date changes at 11:55 PM. Do you think there is a problem with the watch? I've never seen this before. Typically all my watches change date at 2-4 min after midnight. Any input will be greatly appreciated.
 

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Hi:
I'm looking to purchase used Sinn 757 in excellent condition. It keeps great time but I noticed that the date changes at 11:55 PM. Do you think there is a problem with the watch? I've never seen this before. Typically all my watches change date at 2-4 min after midnight. Any input will be greatly appreciated.

For watches powered by the Valjoux 7750, or its derivatives, I consider it normal when the date changes within +/- 15 minutes of midnight.
 
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