Missing Clad Layer: Some 1976 Bicentennial Quarters were struck without their outer clad layer, giving them a partial silver appearance.
Broadstrike Error: Quarters struck without the collar during minting, resulting in a larger and less defined coin, are valued at approximately $45,000
Double Die Errors: Coins with doubling on the reverse side, creating a distinctive and rare visual effect, are extremely sought after. Some of these can be worth over $60,000
Full Braid Error: These quarters showcase a more pronounced braid on Miss Liberty’s hair, making them valuable due to this unique detail, sometimes reaching prices as high as $75,000
Inverted Mintmark: Quarters with the mintmark struck upside down are considered rare and intriguing, often valued at around $45,000
"No S" Proof Error: A particularly rare error where the San Francisco mintmark ("S") is missing on proof coins. One such coin sold for $440,000 at auction