Help to verify a vintage Omega Constellation 167.005

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Hey good folks,

Could anyone please help to give a suggestion on this piece of Omega Connie 167.005? Seems legit in my noob eyes (dial, hands, case, reference, movement), but just want to seek for advice as I read that there are counterfeits out there (especially for the case number 14900).
Many thanks for any thoughts.
Edited:
 
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I think either dial or movement is wrong on this watch. For the 24 mil serial number, the script "officially certified" must be on dial.
 
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Many thanks for the response! Can you also point me to where I can get reference about the dial inscription?