So what about something like the Steve Appleton chips? Those were very limited, they cannot be recreated, and as some people thought, they represented a small slice of Americana to them. They had their only little unique history to them, although I understand it wasn't poker lore.
One set in all of existence, compared to the Binion's which I feel is like owning a pair of original Jordans? No one person could destroy every Binion's set out there, but the SAs are probably gone forever, pretty damn difficult to get the original set back together.
I don't consider either of these remotely close to a "grail set", despite how much various people would LOVE to own them.