Which quarter is worth $1,000,000 in U.S. dollars?

Excuse me, but I'm intrigued by your statement. Could you please elaborate on which specific quarter, or perhaps a unique coin or token in the realm of cryptocurrency, is being referred to as being valued at an astonishing one million U.S. dollars? Is this a hypothetical scenario, or is there a real-world example of a quarter that has achieved such a remarkable monetary worth? Additionally, if it's not a traditional quarter, could you provide more context on the nature of this particular asset and what factors contribute to its extraordinary valuation?