No logo Omega crystals?

Posts
2,505
Likes
2,894
Is this a thing? I replace no logo crystals on my watches, but so far I can say that 2 were definitely original

However I've also very easily removed a logo once while buffing out some inner scratches on a NOS crystal, so I assumed the no logo ones were just removed logos

 
Posts
2,547
Likes
6,622
Logos were etched in the crystals starting sometime in the 1950s - before that they were unmarked.
 
Posts
2,505
Likes
2,894
So if a 1960+ crystal is unmarked, does it mean its internally polished, can we say this 100%?
 
Posts
3,374
Likes
7,225
does it mean its internally polished, can we say this 100%?

no, not at all

usually there is no need to polish a crystal internally.
Most likely its an aftermarket crystal...
 
Posts
16,484
Likes
34,720
Logos were etched in the crystals starting sometime in the 1950s - before that they were unmarked.

The logo was not actually etched into the crystal.
It was however, engraved into the die that was used to mould the crystal, thereby producing an Ω in bas relief on the underside of the crystal when released from the mould.
 
Posts
2,505
Likes
2,894
no, not at all

usually there is no need to polish a crystal internally.
Most likely its an aftermarket crystal...

From my experience there's at least a 10% chance there's a need to polish a crystal's inside, NOS crystals arrive in bad conditions, why they were handled so roughly is beyond me, maybe the armor rings release and scratch the crystals - maybe the customs officers that open and check the items leave a beauty mark

And in the instance I removed the logo, it was just 3-4 swipes with an aggressive polisher/filler and it was gone, I was used to the milder but relatively less useful Polywatch at the time and was quite shocked when it happened - so knowing the state of the second hand market, in my opinion it's very likely a crystal can be original yet this situation happened

But live and learn, I do my inside polishing filling locally now and don't push 100% - if there's a scratch inside, I settle with a 95% improvement and leave the micro scratch sometimes if it's persistent

I asked this question as I recall seeing a crystal without a logo but inside a bag early on, and now seeing this other listing selling crystals without logos made me wonder as it became a pattern - I'll ask the seller more about it
 
Posts
208
Likes
157
I’ve never understood why people care. No other watch brand does this (as far as I know).
 
Posts
2,505
Likes
2,894
I’ve never understood why people care. No other watch brand does this (as far as I know).

Omega in my opinion is the most collectable watch brand, so maybe we're the super collectors and the rest are just meh 😁

But seriously, here are some reasons:
1) Designs are very tightly packed, tolerances low
2) Correct armor ring protects the dial - incorrect one damages
3) Crystals are domed and you need the right shape and height of dome for healthy hand clearance
4) Wrong domed / wrong crystal usually makes sellers watchmakers do funky things, bend hands to clear the dome etc.
5) The correct armor ring and crystal is a big part of the looks, wrong armor ring leaves a black gap that looks bad, wrong crystal distorts texts around the edges
6) You want a watch as original as possible, untouched if possible, a non-marked crystal is just a reminder that it's not, even if it was 1:1 in dimensions
 
Posts
5,586
Likes
8,655
I’ve never understood why people care. No other watch brand does this (as far as I know).


Omega in my opinion is the most collectable watch brand, so maybe we're the super collectors and the rest are just meh 😁

But seriously, here are some reasons:
1) Designs are very tightly packed, tolerances low
2) Correct armor ring protects the dial - incorrect one damages
3) Crystals are domed and you need the right shape and height of dome for healthy hand clearance
4) Wrong domed / wrong crystal usually makes sellers watchmakers do funky things, bend hands to clear the dome etc.
5) The correct armor ring and crystal is a big part of the looks, wrong armor ring leaves a black gap that looks bad, wrong crystal distorts texts around the edges
6) You want a watch as original as possible, untouched if possible, a non-marked crystal is just a reminder that it's not, even if it was 1:1 in dimensions

The crystal on a Constellation is an important part of the waterproofing system.
This is the primary reason to make sure you have a genuine Omega crystal rather than a generic after market part.
 
Posts
208
Likes
157
Crystals are an important part of any brand waterproofing system. And shape and tolerance are an important part of any watch design. Somehow Patek Phillippe, Rolex, Breguet, Zenith, Breitling all manage without marked crystals.
 
Posts
5,586
Likes
8,655
Crystals are an important part of any brand waterproofing system. And shape and tolerance are an important part of any watch design. Somehow Patek Phillippe, Rolex, Breguet, Zenith, Breitling all manage without marked crystals.

You're making a peculiarly big deal over something and nothing.
I don't think anyone actually cares about the logo on the crystal - it's just that with Omega it's a way of knowing that it's a correct part (presuming the correct crystal has been selected in the first place)

there are other marques that also mark their crystals - UG has a shield and Eterna has the 5 dots
For some reason I also thought that Rolex marked their crystals but as I don't follow that brand I could be wrong.
 
Posts
203
Likes
317
Rolex did not mark the plexiglass but the original T19 for vintage submariners are highly sought after, and very expensive
 
Posts
16,484
Likes
34,720
Crystals are an important part of any brand waterproofing system. And shape and tolerance are an important part of any watch design. Somehow Patek Phillippe, Rolex, Breguet, Zenith, Breitling all manage without marked crystals.

I can't see what your issue is.

Many vintage brands had acrylic crystals produced for them (they were rarely made by the OEM of the brand themselves).
Same as with cases and dials, they were made by "case factories" and "dial factories" and also "crystal factories".
Some companies (a couple mentioned above) obviously decided to define their crystals with a small logo, thus adding to the continuity of "OEM" components in a watch.
 
Posts
5,586
Likes
8,655
Rolex did not mark the plexiglass but the original T19 for vintage submariners are highly sought after, and very expensive

Ah -my mistake - I knew I'd been something, somewhere, about a Rolex-marked crystal.
On post-2002 sapphire crystals - to countermand counterfeiting.

 
Posts
3,639
Likes
6,135
Even when you see that logo on the inside of the crystal, it is not sure it was from Omega, either.