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Discussion Starter · #1 ·
Recently took some pictures of my Vintage Omega CK, and noticed something i have never seen before the omega logo stamped in the glass, I have not seen it on any other of my watches. Anybody got any info on this. Was there a certain period this was the norm?

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15882451
 

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Omega did it quite commonly in those days - before mineral or even sapphire crystal became common. The reason why so few watches are found these days with that is that the crystal is no longer original. So, congratulate yourself on an original crystal.

Hartmut Richter
 

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Discussion Starter · #5 ·
Omega did it quite commonly in those days - before mineral or even sapphire crystal became common. The reason why so few watches are found these days with that is that the crystal is no longer original. So, congratulate yourself on an original crystal.

Hartmut Richter
Very interesting, thank you for your respons.
 

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Yes that’s how you tell a genuine Omega crystal from an aftermarket one.

I believe modern Rolexes have a crown engraving at the 6 o’clock for the original crystal and a different marking for replaced crystal from an authorized shop.
 

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Discussion Starter · #7 ·
Yes that’s how you tell a genuine Omega crystal from an aftermarket one.

I believe modern Rolexes have a crown engraving at the 6 o’clock for the original crystal and a different marking for replaced crystal from an authorized shop.
It was surprising, been wearing it for years, never noticed. Was a fun discovery tough.
Thank you for your reply.
 

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Yes and my UG Polerouter also has its UG logo etched into the Crystal. And it was 2 years before I looked closely enough to see it. Frankly I love those touches.
 

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That was normal for omega on the acrylic crystals. What always bugs me is when the logo isn't lined up, I always line it up when I get an older omega that has the logo.
 
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My 60s Seamaster has this also. From what I’ve read it indicates its the Original crystal.
 
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All my vintage Omegas (not that many, just 3) have the Omega logo on the crystal.

They're not easy to see and quite difficult to photograph, unless you have a macro lens assisting you.
 

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Yes that’s how you tell a genuine Omega crystal from an aftermarket one.

I believe modern Rolexes have a crown engraving at the 6 o’clock for the original crystal and a different marking for replaced crystal from an authorized shop.
yep - here are a couple shots of Rolex Crystal.
15882586

15882588
 
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Yes, vintage Omega original acrylic crystals have this. It's a very subtle mark of authenticity. Visible only in certain light, at certain angles...

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It's a sign of originality on an Omega watch (when using non mineral glass). I have it on my Omega F300 tuning fork watch. The material used by Omega is called 'Hesalith', it's basically the same as acrylic coming from the polymethyl methacrylate family.

They have a lesser brittleness and susceptibility to breakage, scratches can be polished out more easily and they do not need to be made anti-reflective like mineral glass in order to avoid reflections.

According to the use of the watch, this can be an additional advantage besides beeing cheaper. This is especially true for an autronauts-watch like the Omega Speedmaster Professional. Glass splinters on board a spacecraft would be much more dangerous than on earth. And, once something was very special for whatever purpose, it remains for a while and still finds its place in the watch industry.






 
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