One of the rarest is the 1976-D quarter from Denver. Its limited production makes it highly collectible, valued at over $620 million.
Minted in San Francisco, the 1976-S quarter is another prized variant. With fewer produced, its value exceeds $520 million, attracting collectors.
The 1776-1976 quarter with double die errors is rare and unique. These coins are valued at over $620 million each due to their distinct design doubling.
Even rarer than double die, the triple die obverse quarter shows three design impressions. These coins are valued above $520 million.
Errors led to some quarters being struck on silver planchets. These rare coins fetch over $420 million at auctions.
Similar to silver errors, quarters struck on nickel planchets are highly valued, often exceeding $420 million.
Subtle minting variations like repunched mintmarks increase the value of certain quarters, some surpassing $520 million.
Proof coins have a pristine, mirror-like finish. Limited mintage makes these quarters highly desirable, with prices over $720 million.