Marcus Hanke
[PuristSPro Moderator]
11515
Strange calendar hiccup
Not having worn my Acqua Perpetual since December, I started to set the correct date yesterday. Normally, this is not something to think about twice, due to Ludwig Oechslin's brillant mechanism this is accomplished within less than two minutes.
This time, however, something strange happened. After reaching the indication of February 7th with the date quickset function, the calendar would not advance any further. At first, I thought the crown had returned to its winding position, but soon I discovered that it was no problem to change the date backwards. So I returned to January 1st, no problem, then forward again, January 7th was passed without hassle, but, again, on February 7th, the calendar stuck.
I then tried to influence the date display manually by moving the hour hand over midnight. I could see that the big date indication wanted to switch to 08, but in the middle of the transition snapped back to 07 again. Hhmm, okay. Now I moved forward the hands for another 24 hours, and this time, the date advanced flawlessly. From 08, I could use the quick-set function again to March 21, and last midnight, the date change to 22 went without any sign of trouble again.
Maybe the problem will show up on February 8, 2024 again? Has any UN perpetual-owner had such a problem before?
Marcus
Strange calendar hiccup
Not having worn my Acqua Perpetual since December, I started to set the correct date yesterday. Normally, this is not something to think about twice, due to Ludwig Oechslin's brillant mechanism this is accomplished within less than two minutes. This time,...
I had exactly the same problem
It was few years ago and I believe also in February. I solved it exactly the same way you did: by manually advancing the time to the next day. My watch was serviced relatively recently and I don't know if it fixed the issue. Interestingly I never experien...
It underwent full service in 2017 ...
... and was not worn long or often enough since to suggest another service. Time keeping is still very good, it has a tendency to run a little bit faster, though. Marcus
It was a limited edition of 99 pieces ...
... which I like because of the standard Marine Diver hands that are a little bit more legible in the dark than the arrowhead Acqua hands. Marcus
Well, the day is not included in the quick-set function ...
... which is the secret behind its good useability. It is thus possible to adapt to changes in the leap-year cycles without having to send in the watch (academic issue, of course). To change the day you have to move the hands via the crown forward or back...
I do remember that one and love the dial! My Marine Perpetual ltd (same movement) has not been serviced and has not done that. What I have done is to make sure it runs at least once a
month (but never on a winder) and have not worn it a lot overall. It still has proper reserve time and is within chronometer limits (actually is extremely accurate!). However, my MIH did something similar. It's date kept jumping back in mid month (15-16?)...
I have never had that problem
I did sometimes have trouble getting the U-N perpetual's crown to cleanly fall into one of the proper 3 positions. I put a tiny drop of lube on the stem and it took care of the problem which I think was due to an o-ring dragging on the stem. I have had th...
A well-known "problem" indeed ...
... including the crown"falling" into winding position from quick-set rather frequently. Regards, Marcus
