These gems include the Bicentennial Quarter, which has a unique variant worth nearly $50 million.
Bicentennial Quarters, issued in 1976 to commemorate America's bicentennial, are worth little.
A minting misalignment caused a double die obverse, which replicates the coin's design and raises its worth to approximately $50 million.
A 40% silver version in a collectors mint set is rare.
The Great Depression made these quarters scarce, but they are now treasured for their historical significance.
Beginning the famed Washington quarter series, originally planned as a one-year commemorative issue but extended owing to popular demand,
this quarter is highly desirable in uncirculated Denver (‘D’ mintmark) mintage.