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Looking at the second image showing the of the back of the package I would say it is a fake. On the genuine Apple Bumper the barcode on the back is printed on a label and the text is near the bottom of the package. On the fakes it is printed directly onto the package and the text is much higher up.

If you look at this post in the iPhone Bumpers on eBay thread you can see some comparison photos of the packaging.
 
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