I actually canceled buying this drop, lots of head-fi'ers bought them in the last drop and they received them in CASIO boxes, with the Serials removed from the side.
GhostHi Ghost,
I'm rather curios as well. In addition, it's important to keep in mind that we cover all warranty for products sold through Massdrop.
I'd love to see these boxes so I can discuss it with the vendor.
Thanks for the post!