Aqua Terra 150m Chronograph Question

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Hi all,

I have received a Seamaster AT 150m Chrono, which has a date wheel like this one:

at150_01q0u9f.jpg
The picture is from a Omega AD and should be ok.
But on the Omega Website this watch has a different date wheel:

at150_022suln.png
This got me thinking: Has Omega really used different date wheels, or is there something wrong with the first type?

Thanks a lot for your help!