One for the horologists

[trident-7]

I dug out my 1970's NOS Certina Certiday from the back of my safe recently.

I wound it up & have worn it for several days. It seems to lose about 10-15 minutes quite quickly but then seems to settle in & stay at that.

I've got it on the Timegrapher now & it's saying -2s/d, amp 230, B.E. 0.1ms.

Any idea of the cause from our in house professional watchmakers? Or anybody else who can chip in?

I expect I'll take it in to my local watchmaker soon but it'd be good to have some input.

Thanks.

[magirus]

I'm afraid I can't help with your question, but it does look very nice indeed!

[trident-7]

I'm afraid I can't help with your question, but it does look very nice indeed!

Thanks maggy

[trident-7]

Ok, so the hands have barely moved from my initial post & it’s now lost 2.5 hours. Yet the timegrapher says the movement is running at +2s/day. I’m sure that there’s a good explanation for this……..

[JasonM]

Loose hands on the pinion? Do they move normally when you adjust them? Beautiful watch by the way.

[Robbo12]

As Jason has said or it could be a loose canon pinion . When you set the time is there any slight resistance, or just very easy to set/ spin the hands
This is hard to explain in words but you should be able to feel a nice solid resistance fom the crown.

[trident-7]

As Jason has said or it could be a loose canon pinion . When you set the time is there any slight resistance, or just very easy to set/ spin the hands
This is hard to explain in words but you should be able to feel a nice solid resistance fom the crown.

There's hardly any resistance when I move the hands. The hour hand is always bang on the hour marker when the minute hand is at 12. It sets the time easily enough but definitely very light on the resistance when turning the crown.

[trident-7]

....update....the hour & minute hands are hardly moving at all now. The second hand runs as normal.

[Omegary]

My money's on a loose canon pinion. It probably needs a service too if the amps are 230° at full wind or 0 hour.

Great looking watch, very much of its time and well worth spending a bit of money on to sort out, well imho anyway.

Cheers,
Gary

[trident-7]

My money's on a loose canon pinion. It probably needs a service too if the amps are 230° at full wind or 0 hour.

Great looking watch, very much of its time and well worth spending a bit of money on to sort out, well imho anyway.

Cheers,
Gary

Yes, it'll be in the capable hands of my local horologist some time soon. Interesting to hear everybody's views. I might say to my watchmaker that I believe it may have a loose cannon pinion...it might make me look as though I know what I'm talking about. I'll blame you lot if that's wrong ;-)

[Peterd]

Nice watch.