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Genuine coils sold aftermarket have the roundel ground off the cap. The coil in your pic doesn't look like that.
Pricing is usually a give away as to whether the original BMW supplier actually manufactured it.
$ Aftermarket = A manufacturer that produces their own part compatible with an original design or dimension.
$$ OES = Original Equipment Supplier. A supplier to any OEM, not necessarily BMW.
$$$ OEM = Original Equipment Manufacturer. This is supposed to indicate that this part was made by the manufacturer that supplies it to BMW.
$$$$ Genuine = Official BMW licensed part with full BMW warranty.
With today's savvy buyers always looking for genuine quality at aftermarket price, sellers will stretch any truth the can to make their product sound like it's no different than what you'd get from the dealership. I've even seen sellers replicate official BMW parts labels pasted to their packaging in an effort to appear genuine.
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