Pie Pan Q...

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I might be confused...so...is it possible that 2852 / 2853 (don't know why there are two numbers?) could have a 501 movement then?...according to the Omega link you posted?
Yeap, I have a Cal 501 2852 chronometer, I’ve seen quite a few so I don’t think they’re all that uncommon
 
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i noticed the back of the case says "patent applied" vs a number...could that further explain an older version of 1956 / 501 movement?
 
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i noticed the back of the case says "patent applied" vs a number...could that further explain an older version of 1956 / 501 movement?
That’s a very good point and I never noticed it before.

Learn something new every day.
gatorcpa
 
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That’s a very good point and I never noticed it before.

Learn something new every day.
gatorcpa
the one you sent a link to at VGW London ( has been sold) also says "Patent Applied"...so that's good news I assume. Appreciate the discussion - learning at the speed of fear!
 
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Need larger and higher definition pictures. The case looks good to me, as does the movement.

The one thing I would say is that if correct, this example would be the first one I've seen in almost 20 years of collecting that had a true pie-pan dial over a Cal. 501 chronometer movement.

The pie-pan dial was introduced around 1956. By that time, the Cal. 501 had been replaced in the Constellation by the Cal. 505 with a higher jewel count and improved automatic assembly.
gatorcpa

Hi, @gatorcpa ,

I am not sure that the one I owned also included?
The pie-pan dial of ref.2887-1 (the earliest batch of ref.2887) with serial no. 14,97x,xxx and cal.501 (19 jewels).
However, the case was too overpolished and the movement need to be serviced.😲


best,
Teerapat
 
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I did not consider the Ref. 2887. Those had pretty much any combination of dials and movements that you can think of.

However, the OP's watch is not a Ref. 2887. It is a Ref. 2852.

I should have been more careful there.

Thanks,
gatorcpa
 
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What about the bricks? I've read on (Omega Constellation Collectors) papers ((I think)) that a tell-tail sign of a fake caseback would be missing the bricks on the observatory BUT I see some posting here guys showing their Constellations and some don't have the bricks. Are there only certain years when Omega included and did not include bricks?
 
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What about the bricks? I've read on (Omega Constellation Collectors) papers ((I think)) that a tell-tail sign of a fake caseback would be missing the bricks on the observatory BUT I see some posting here guys showing their Constellations and some don't have the bricks. Are there only certain years when Omega included and did not include bricks?
A short answer is that the bricks show up on solid gold constellations. But I know that's an insufficient answer because I'm pretty sure there are exceptions. But most (all? Maybe not) steel or gold-capped cases don't have bricks. A longer answer from the experts is likely coming soon. I'm pretty sure the answers are on other threads, too, if you try searching the forums.
 
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It’s certainly dependent on the reference - you’ll find plenty of 1960s Constellation reference with SS cases and brick medallions. For 2852s, I’m yet to see a correct brick medallion in a non-solid-gold case.

Cal. 501s were used for 2852s over a serial stretch of hundreds of thousands. So really not that rare at all, I should even have a few EotAs for proof in case someone is in disbelief. Love the “rabbit hole” though, to use @gatorcpa words, and have been collecting serials and data of 2852s for quite a while. I’ll bring it all together in a post at some point, maybe the serials along with infos such as caliber, crown style (clover or thick decagonal), dial form and layout, style of indices, -er or -re spelling of chronometre, straight or angled M, case material and sub reference will be helpful to some. My idea was to include example pictures and some explanations in the post, though, and that’ll take a while to produce.
 
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A short answer is that the bricks show up on solid gold constellations. But I know that's an insufficient answer because I'm pretty sure there are exceptions. But most (all? Maybe not) steel or gold-capped cases don't have bricks. A longer answer from the experts is likely coming soon. I'm pretty sure the answers are on other threads, too, if you try searching the forums.
First and second generations Constellations (cal. 50X, 55X, 56X), no bricks on steel or gold-capped versions, bricks on solid gold (14K or 18K).
Third generation ("C" cases only, cal. 55X, 56X and 751), no bricks on solid gold (14K or 18K), bricks on steel or gold-capped.

After that, each case reference has its own rules.
gatorcpa
 
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First and second generations Constellations (cal. 50X, 55X, 56X), no bricks on steel or gold-capped versions, bricks on solid gold (14K or 18K).
Third generation ("C" cases only, cal. 55X, 56X and 751), no bricks on solid gold (14K or 18K), bricks on steel or gold-capped.

After that, each case reference has its own rules.
gatorcpa

I know what @gatorcpa means but the second statement about third generation references might be confusing to some.

For clarity, around 1966 Omega swapped the brickwork observatory from brickwork for gold cases to brickwork for non-precious metal cases (including gold cap)

[Note -this is for most but there are some gold case and non-precious outliers that retained or omitted the brickwork the observatory.]

The change included C-cases, 168.010s, late 168.004s, 168.016s, 168.018s. -all are 561s, 564s or 751s.
The monocoque 167.015/025 (cal 551) and 168.015/025 (cal 564) have some variation in consistency, as do the 60s super-thin Constellations (e.g. 167.021, cal 712) - so shouldn't be dismissed if they don't follow the norm of having brickwork observatories.

I don't recall ever seeing a 60s non-precious dogleg with a brickwork observatory, which is odd because they changed the contemporaneous 168.004 - but if someone has one.....
 
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What about the bricks? I've read on (Omega Constellation Collectors) papers ((I think)) that a tell-tail sign of a fake caseback would be missing the bricks on the observatory BUT I see some posting here guys showing their Constellations and some don't have the bricks. Are there only certain years when Omega included and did not include bricks?

Have a look at Desmond's splendid essay on the subject
http://omega-constellation-collectors.blogspot.com/2008/03/constellation-medallions.html
 
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Thanks. It seems every time I learn something it reveals something else I didn't know...
 
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Thanks. It seems every time I learn something it reveals something else I didn't know...

thanks I live this site...I missed this article...
 
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Thanks. It seems every time I learn something it reveals something else I didn't know...

you're welcome and we've all been there
- and it never stops as there is always some new quirk or some tidbit about Constellations that you didn't know revealing itself.

But that is what is so good about the collective knowledge on OF.