'moi...Lolita' catalogue numbers

[WyomingGrizFan]

I've come across something that causes me a little bit of confusion. The CD-single release of "Moi...Lolita" by Polydor over on http://www.swisscharts.com/showitem....E+Lolita&cat=s has two different cover images but the same catalogue number of 561 956-2 (that's the top two images on the right hand side). Is that for real or are they mistaken? I would of thought two different covers would be, like, two different releases, subsequently, two different catalogue numbers by Polydor. But here there isn't.
Any help from you avid fans would greatly be appreciated to clarify/understand this consideration. Thanx.