Those are DT770/880/990 pads if I'm not mistaken, and very possibly not actually Beyerdynamic pads. Between the pads and box both being incorrect, it definitely smells fishy; if it were me I would definitely return these and try again. The 1990s are an incredible headphone, I would not want my first listen to be unpleasant because of a shady pair.
Thanks. Reply above. Still trying to figure forums functionality.I agree with the above poster. There's something definitely very fishy about those. Not a certified retailer, the wrong pads, and the wrong serial number. I'd return them without hesitation.