As of my last knowledge update in January 2022, there is no information or credible reports of a Bicentennial Quarter being worth nearly $10 million or other Bicentennial Quarters being valued at over $500,000 each.
It's important to approach such claims with caution, as extraordinary valuations often require strong evidence, rarity, and authentication by reputable numismatic experts.
These quarters typically hold sentimental value for collectors due to their patriotic themes, but their market value is not typically in the millions or hundreds of thousands of dollars.
If there have been recent developments or discoveries regarding the valuation of specific Bicentennial Quarters, it's recommended to consult updated sources, such as reputable numismatic publications, coin valuation websites, or auction results.
Professional coin appraisers and well-established coin auctions can also provide valuable insights into the current market.
Always be cautious of potential misinformation or exaggerated claims in the numismatic community, and verify information through credible sources before accepting the validity of extraordinary valuations.
As of my last knowledge update in January 2022, there is no credible information or verifiable reports supporting the claim of a Bicentennial Quarter being worth nearly $10 million or other Bicentennial Quarters being valued at over $500,000 each.