Seamaster Cosmic user guide ?

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i have a Seamaster Cosmic 166026 and the date setting is a bit special compared to my other watches.
I was wondering if there was a user guide at the time for this watch?

 
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I am sure there was but the quick set date function is to simply pull the crown out and back in and it advances.. does seem a dangerous task on an old watch!
 
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yes that's exactly it, and I admit having a little trepidation every time I pull on the crown.
I would have found it nice to have a booklet with clean drawings that explain the use.
I have the user guide for my premoon and I have never seen other models.
 
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I am sure there was but the quick set date function is to simply pull the crown out and back in and it advances.. does seem a dangerous task on an old watch!

I’ve always wondered how stressful this actually is for the mechanism. The mechanical click of proceeding the date this way feels more intense than the method of later movements, in which you just turn the crown in the second crown position.
 
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yes that's exactly it, and I admit having a little trepidation every time I pull on the crown.
I would have found it nice to have a booklet with clean drawings that explain the use.
I have the user guide for my premoon and I have never seen other models.

Whatever you do, don't change the date within an hour either side of midnight! This will probably cause the date mechanism to get stuck and you'll need a watchmaker to put it right.
 
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MtV MtV
I’ve always wondered how stressful this actually is for the mechanism. The mechanical click of proceeding the date this way feels more intense than the method of later movements, in which you just turn the crown in the second crown position.

It's certainly stressful for the owner! Eg when you last wore your date watch on the 5th, and it's now the 27th....😲
 
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MtV MtV
I’ve always wondered how stressful this actually is for the mechanism. The mechanical click of proceeding the date this way feels more intense than the method of later movements, in which you just turn the crown in the second crown position.
I’ve wondered this, too, as the owner of a couple of vintage date Omegas (cal 564 and 565). I try and either keep them ticking when wearing a few days at a time or leave them until the indicated date was yesterday, so it’s easy to turn it over when setting the time!
 
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I’ve had the same question. I’ve assumed that Omega made this date setting method relatively problem free, and I haven’t seen threads where owners are saying they have broken. But still, it feels dangerous.

Maybe one of the watchmakers will weigh in.
 
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Here's a photo of a vintage user guide that describes the quickset date for these. My Omega with this feature was recently serviced, and the date setting takes very little effort, so I haven't worried about it, other than making sure I'm not updating the date anywhere near midnight.

 
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Have you looked on old-omegas.com? Lots of great info there.
 
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I’ve had the same question. I’ve assumed that Omega made this date setting method relatively problem free, and I haven’t seen threads where owners are saying they have broken. But still, it feels dangerous.

Maybe one of the watchmakers will weigh in.

It can be, depending on a few things. The original design of this could cause damage to the date indicator if the quick set was used when the date change was already in progress. Later, changes were made to make this damage less likely, and the change to those parts is a mandatory upgrade by Omega.

Many local watchmakers don’t do this upgrade and may not be aware of it even, as I still do this upgrade quite frequently on watches that come to me.

The safest way is to set the hands to a known safe time, like 6:30, and then quick set the date to the day before the one you want, then advance the hands to the correct date and time.

Cheers, Al
 
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Thanks, Al.

I’m not sure why, but I’ve always done it that way that on any quickset watch (quickset to the day before, and hand wind the last bit). Maybe because I don’t want the bother that comes with accidentally sending it past the right date.
 
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Have you looked on old-omegas.com? Lots of great info there.
wow! Exactly what I needed
now I know which booklet to look for.
thank you very much😉