Any idea on this 321 dress chrono reference?

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The omega vintage website does not throw up any guide on this reference BA 101003 62, but to me it sure does look like the 4-digit reference 2466 going by the lug styling. The dial/ hands however are coeval with the -62 datestamp, so my question is is this a legit/ known reference. I don't have access to AJTT so calling the hive for help.

 
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Truth be told - I am not very sure myself this being a legit reference, but then again, in all possibility that may be my lack of knowledge.