Always excited to see something so rare and FF related become available. EBay has one of the FF Proofs listed. Item 381493091121
While the seller lists it as '1/1' etc, it isn't but rare nonetheless. What is it? It is a third of a 'missing color' or 'progressive proof' set. To date, I've seen maybe 3 of these exact FF proofs. 3 full FF proof sets actually. Not 1/1, but very rare.
Where did it come from? Probably either smuggled out of the factory by an employee or found in a nearby dumpster - discarded trash. Probably cut from a full sheet.
I believe it sold for around $300.
