question about the 30t2 movement

konung39 · Jan 25, 2023

Bought this machine the other day. Did I correctly determine that this is Omega 30t2?
What can you tell about its year of manufacture from its serial number?
Is it possible to find out what case design this watch had? Is the crown original? (she's without the "omega" badge)
The dial seems unusual to me, I see such an arrangement of Roman numerals for the first time. Usually they are located not horizontally, but radially.
And why is this stone white and not red? is this bad or normal?

Dan S · Jan 25, 2023

You will probably get more responses if you post in English.

gatorcpa · Jan 25, 2023

konung39
Всем привет!
Купил эту машинку на днях. Я правильно определил, что это Омега 30т2?
Что можно сказать о годе его выпуска по серийному номеру?
Можно ли узнать, какой дизайн корпуса был у этих часов? Корона оригинальная? (она без значка "омега")
Циферблат мне кажется необычным, такое расположение римских цифр вижу впервые. Обычно они располагаются не горизонтально, а радиально.
И почему этот камень белый, а не красный? это плохо или нормально

Not a perfect translation but this is what I get from my iPhone.

Hello everyone!

I bought this car the other day. Did I correctly determine that this is Omega 30t2?

What can be said about the year of its release by serial number?

Is it possible to find out what case design this watch had? Is the crown original? (It's without an "omega" icon)

The dial seems unusual to me, this is the first time I see this arrangement of Roman numerals. Usually they are located not horizontally, but radially.

And why is this stone white, not red? It's bad or normal

gatorcpa · Jan 25, 2023

1. Yes, this looks like a cal. 30T2.

2. The movement was made around 1941.

3. The dial may have been used in several different cases. Crowns were not signed by Omega at that time. Yours could be original.

4. I have seen dials like this before.

5. Omega used clear stones so that watchmakers could easily see if there was sufficient oil underneath.

Hope this helps,
gatorcpa

konung39 · Jan 26, 2023

Dan S
You will probably get more responses if you post in English.

Oh, sorry, fixed it. some auto-translation functions in the phone browser

konung39 · Jan 26, 2023

gatorcpa
1. Yes, this looks like a cal. 30T2.

2. The movement was made around 1941.

3. The dial may have been used in several different cases. Crowns were not signed by Omega at that time. Yours could be original.

4. I have seen dials like this before.

5. Omega used clear stones so that watchmakers could easily see if there was sufficient oil underneath.

Hope this helps,
gatorcpa

Thanks!
Today I took a closer look and found the inscription 30t2 under the balance)
But why was this stone red on most of the movement of that time, with some kind of limited series with a white stone?
I was confused by the dial because it is smaller than the diameter of the movement.

Pvt-Public · Jan 28, 2023

gatorcpa
5. Omega used clear stones so that watchmakers could easily see if there was sufficient oil underneath.

Uh-Oh mine has red stones. Pretty sure it came that way. 😀

Archer · Jan 28, 2023

gatorcpa
5. Omega used clear stones so that watchmakers could easily see if there was sufficient oil underneath.

This jewel is not oiled, so that theory is out the window...

SkunkPrince · Jan 28, 2023

Archer
This jewel is not oiled, so that theory is out the window...

Isn't that for the pallet? Why wouldn't it be oiled?

mac_omega · Jan 28, 2023

SkunkPrince
Isn't that for the pallet? Why wouldn't it be oiled?

Just because there is no need to do so - believe the professional watchmaker!

Archer · Jan 28, 2023

SkunkPrince
Isn't that for the pallet? Why wouldn't it be oiled?

If you give it some though, it should be pretty clear why. For the vast majority of the time, this part is stationary - it only moves when the roller jewel engages the pallet fork horns, and moves the pallet from one banking to the next - usually something like 50 odd degrees of rotation - essentially the lift angle. So this is not a high wear item.

In addition, you don't want to hinder the movement of the fork, as that would rob the balance of amplitude, and oiling this pivot would cause drag.

There are some schools of thought out there that very large movements (like those in pocket watches) should have the pallet pivot jewels oiled, but if you look at the tech guide for the ETA 6497, which is a pocket watch movement, no oil is called for. I think the only watch movements I've ever seen oil recommended in this location for, are some Seiko movements, but they always have lousy amplitudes anyway (at least in my experience) so for those it might not matter...

SkunkPrince · Jan 28, 2023

Thanks for the explanation. Always learning something new around here.

konung39 · Jan 30, 2023

Archer
This jewel is not oiled, so that theory is out the window...

Yes, it seemed strange to me too. And if the stone is red, the master cannot know whether to lubricate it or not?))
I think it's more likely due to some interruptions in the supply of stones during ww2, for example. Therefore, instead of corundum, they put sapphires, perhaps.

gatorcpa
1.

4. I have seen dials like this before.

If you could give examples of reference with the same dial, then I would be very happy.
I measured the dimensions, it turns out that the winding shaft to the head is 1 mm long. With a movement diameter of 30mm, the case could not be larger than 32mm, while the diameter of the dial itself is 28mm

konung39 · Feb 6, 2023

Took off the dial and found a couple of interesting things.
First - I thought the numbers and hour markers on the dial were just painted with paint. But they appear on the other side of the dial, apparently they were applied in some electrochemical way.
Secondly, the manufacturer's mark was found on the dial. This is not Omega, this is a third-party manufacturer Lemrich suisse, next to it is the L&Co brand and numbers "6 28"
By the way, there is no "swiss made" inscription on the front of the dial itself.

mac_omega · Feb 7, 2023

konung39
This is not Omega, this is a third-party manufacturer Lemrich suisse

Of course because Omega did not manufacture dials themselves...
Lemrich is one of the frequent contractors

konung39 · Feb 7, 2023

mac_omega
Of course because Omega did not manufacture dials themselves...
Lemrich is one of the frequent contractors

Thanks
I thought that even made by other manufacturers, the dials will be branded "Omega"

konung39 · Mar 13, 2023

Hello again everyone.
Tell me, what is the size of the screws with which the 30t2 movement is attached to the case?

hoipolloi · Mar 13, 2023

konung39
Hello again everyone.
Tell me, what is the size of the screws with which the 30t2 mechanism is attached to the case?

Check the case you want to put it into first. In some set ups, you don't need them.

konung39 · Mar 13, 2023

hoipolloi
Check the case you want to put it into first. In some set ups, you don't need them.

Thanks!
Yes, it's logical!
But I will use them.

Deafboy · Mar 13, 2023

It's a bit hard to see in the picture, but the stone looks to me it was replaced with a bushing.

question about the 30t2 movement

konung39

Dan S

gatorcpa

gatorcpa

konung39

konung39

Pvt-Public

Archer

SkunkPrince

mac_omega

Archer

SkunkPrince

konung39

konung39

mac_omega

konung39

konung39

hoipolloi

konung39

Deafboy

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