Help with reference - Is this an Omega Constellation C-Case Ladies 568.011 or 568.001?

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Hi,

I’m looking for some clarity on the reference of this watch. Based on the picture and my limited knowledge, it looks to me like Gérald Genta’s Ladies’ Constellation C-Case 568.001, but the seller listed it as 568.011. I’m not entirely sure what the differences are, though. Could you please help?

Thanks in advance for any help or pointers!

M