HELP: Omega 33.3 dial - original or not?

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Hi,
I'm new to this forum so this is my first post.
I possess a great Omega 33.3 dial.
You can see the picture below.

I did a lot of research on the dial and I'm not sure if it is original or a in my opinion quite good redial.

One thing makes me think it is not original:
The 30-minute-counter. It has 10 steps between two numbers but it should only have 5 because it does not count 15 minutes.

On the other hand I found exactly the same dial on timeline.watch:
https://www.timeline.watch/watch/1940-omega-chronograph-ref-ot-2040-tachymeter-telemeter-cal-33-3/

I'm looking forward to your help.

Kind regards.
 
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This is an aftermarket dial of unknown provenance - it is not a redial.
 
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This is an aftermarket dial of unknown provenance - it is not a redial.
Hi,
thank you for the response. How did u get this information?
 
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from a knowledgable fellow collector
Don't get me wrong i completely trust you. I would just like to learn something.
Where do I have to look to identify it as a aftermarket dial? Is it the printing? The pattern? The color? Or do I have to know all dials from the age?
 
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Finding two of these on the net tells you, that they made a few new dials from scratch. Looks like Bethges work...
 
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Don't get me wrong i completely trust you. I would just like to learn something.
Where do I have to look to identify it as a aftermarket dial? Is it the printing? The pattern? The color? Or do I have to know all dials from the age?

It helps, if you know all dial patterns. Look at omega and Tissot dials from that time and report back with your findings.