It's actually a fascinating innovation in coin making, I can't think of another type of coin where the inherent value (in gold, BTC or whatever) has a probability component. That it is a coin in the form of a cereal box is just funny.
Well, this idea itself isn't that unique, as it has been done by others, for example, the Microsoul lucky coins. It was a physical coin with either 0.01
BTC or 1
BTC loaded on them, but you don't know until you destroy the hologram protecting the private key.
Still, this is quite unique, nice catch minerjones!