Nice collectible!
On a side note, people should start seeing Bitcoin as a currency of the world, of actual physical transactions. Bitcoin is a currency not just in the internet but also outside.
But if Bitcoin will have its note version, that would be a digress from its being a digital currency.
I agree once it has its own note version where you can hold it on your hand, it will expand more its usage in this world not just in the virtual world but also in the real world. Because by that we dont need to convert it anymore.