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Peemacgee
·courtesy of Dr Ranfft
Can anyone see anything wrong with this seamaster?
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gatorcpa
··ΩF InvestiGatorWith this series of movements, it is my understanding that there are no special parts, other than the inscribed bridges that are different between them.
More time and effort to meet the COSC standards were given to movements from the chronometer calibers. These were so well made, that it may not have taken much effort by Omega to adjust them, but the work was done for each one of these 551, 561, 564 and 751 movements.
Hope this helps,
gatorcpa
More time and effort to meet the COSC standards were given to movements from the chronometer calibers. These were so well made, that it may not have taken much effort by Omega to adjust them, but the work was done for each one of these 551, 561, 564 and 751 movements.
Hope this helps,
gatorcpa
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ConElPueblo
·I was under the impression all 562 are Chrono rated and had at least the added text on the movement bridge. I was understood that dials that did not state chronometer where redialed or had frankin movements.
Not sure if the movements are actually different.
I think you're mixing them up with cal. 561? For the 5XX series of watches, the rule is that the chronometer-rated movement has a caliber number one lower than the non-rated. And the 17-jewel count versions one number further down. At least, that's how I remember them 😁
Also, what @gatorcpa says.
Is it the earlier bumper movements where the balance have a different construction from rated to non-rated movement? Seem to remember a member showing some interesting close-ups earlier this year on that subject.
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gatorcpa
··ΩF InvestiGatorIs it the earlier bumper movements where the balance have a different construction from rated to non-rated movement?
Google up pictures of cal 351 vs. 352.
Same is true for cal. 30T2 and 30T2RG.
With the introduction of micro-regulation on all Omega automatic movements, starting with cal 354 (which comes both with and without chronometer rating), there is no difference in the parts other than cosmetics.
gatorcpa
