Referring to the Speedy Tuesday, I see nothing on Omega's web site about the case being NAIAD, or that the case back always stays aligned. This looks like (other than LE engraving) to be a pretty basic Speedmaster case, with no special features like self-aligning case backs. You would think if Omega had found some way to keep things aligned, they would be shouting it from the rooftops, rather than not saying anything at all about it. Looking at the Extranet and the case breakdown for the Speedy Tuesday, it uses the same enlargement ring (movement spacer) that a regular Speedmaster does, same case back gasket, same anti-magnetic cover...if there is something different about this case (doubtful based on what I can see), it will be interesting to see what it is. My gut tells me they are fudging it to get it close, but the alignment won't be "perfect" as it would with a correctly installed NAIAD case back.
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