There's alot of variation in the packaging because PIAA sells their bulbs all over the world.
Google search "PIAA 15660" (part number viewable in the picture) and you'll see a bunch of different sellers with the same package.
I'm not saying you have to buy those particular bulbs but I'd be hesitant to accuse them of being counterfeit.
Take a look at how they mark the packaging based on where they are selling the product. This is a pic I took of my bulbs I bought from a seller in Hong Kong.
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