Let us suspend disbelief for just a moment. Let us admit, however reluctantly, that rarity — true, treasure-level rarity — has not been extinguished entirely. That somewhere out there, like a pearl gleaming in the murk, there exist propositions so extraordinary that we need not apologize for calling them exceptional. Propositions whose every expression — narrative, asset, provenance — exemplifies the kind of uniqueness that once defined great human undertakings