Polymerbit - 0.1 BTC
This was the first release from Polymerbit. Designed to resemble currency, this concept is the worlds first polymer Bitcoin note. It was the only Polymerbit note to be printed by an external company, due to delays and other issues Polymerbit decided to print all future notes themselves.
The ribbon on the front left of this note was intended to be grey, but due to a mistake by the printers the final released version was blue.
Note #18 is unique because it was sold at auction in 2018 and came with hologram #1018 since the original was lost.