Hand Alignment on Date Subdial - 3940/3941

Nov 15, 2020,18:39 PM

On my 3941, I noticed that the hand on the date subdial was well-centered on the dial marker at the end of the month, but that the alignment has gradually deviated over the past two weeks. I used the pusher to adjust the date to test the alignment throughout the month. The hand seems to be well-aligned from the 22nd-1st but out of alignment from the 2nd-21st. Has anyone else observed this on their 3940 or other PC? Is this an indication that service is needed?

Here are some images to demonstrate:


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I don't have experience with this, but it would drive me crazy...

 By: mdg : November 15th, 2020-20:04
...I'm also guessing it's a simple adjustment, although it might take a while... Beautiful watch btw : )

Thanks for the insight.

 By: btinl : November 15th, 2020-22:16
I purchased this pre-owned so will check back with the AD about getting it fixed.

+ 1 I concur with Patek_Ambassador

 By: Mike H : November 15th, 2020-23:19
A normal full service will fix the problem. After all high horology is still precision mechanics...

You must be right

 By: Mike H : November 16th, 2020-16:02
One way or another btinl must bring it to PP for service and see the diagnosis (and quotation for fixing the issue)

Thanks for the input.

 By: btinl : November 17th, 2020-17:32
The watch is on its way back to the AD to be fixed.

👍 thanks for the update

 By: Mike H : November 18th, 2020-10:28
I cross my fingers for you that ithe issue will be smoothly handled by PP🤞🤞. Keep us posted of outcome

I have a 3940 and 3941 and do not experience this problem with either.

 By: BuffaloWatch : November 17th, 2020-13:24
Note though you will want to reset the leap Year indicator, to "4" as 2020 is the Leap Year.

You are correct. That leap year indicator is correct.

 By: roger.goodgion : November 17th, 2020-18:34
It doesn’t matter if you send it in, they will send it back to you set at the current date.

You're right

 By: BuffaloWatch : November 18th, 2020-04:03
My error