Help ID Vintage Omega Constellation

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Hello all,

I need help IDing a vintage omega constellation.

It has

1. arrowhead markers
2. crosshair dial
3. i dont think the dial is pie pan either
4. all silver and white
5. case is stainless steel

There is also no date tracker.

I tried looking online myself but I can't seem to find any that don't have that pie pan dial.
 
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Quick amendment here. It does have a pie pan dial however it is smooth between the hour markings. Almost exactly like the CK14381, but the dial is perfectly round instead of hexagonal between the hour markings.
 
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Not uncommon to have a dome dial like this. Do you have a pic of the case back? That’ll help significantly.
-re spelling of Chronometre means it’s not a 14381.

Can you feel if it’s a bumper or a full rotor movement?
 
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looks exactly like this, except the observatory piece is almost bronze while the case back matches the previous picture sent.

How would I be able to tell the difference in movement?
 
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Here’s a gold cap version
When you wear a bumper movement watch you can feel a little thump or clunk periodically as the winding mechanism bounces back off the spring “bumper”. It’s quite distinctive and most people rather like it.