I don't understand your statement. I think that Omega printed these brochures with a picture/rendering of the 105.003-63 that they intended to produce and had the parts in stock to produce. They took the existing 105.002-62 and gave it a new caseback, the 105.003-63.
If Omega puts out a sales brochure showing 105.003's with Alpha Hands, and some of the earliest versions of these watches have Alpha Hands (I'm aware of 3) and the Omega Database mentions Alpha Hands then it all dovetails rather nicely to me.
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