These extremely rare error coins, struck on planchets intended for silver dollars, are highly sought after by collectors. Prices for such specimens can range from $2 million to $5 million USD, depending on their condition and provenance.
Coins with a double die obverse, where the design appears doubled due to a misalignment during the minting process, are rare and valuable. A 1976 bicentennial quarter with a prominent double die obverse can be valued at $1 million to $3 million USD.
Instances of bicentennial quarters struck on gold planchets are exceedingly rare and highly prized by collectors. These unique error coins can command prices ranging from $3 million to $5 million USD, depending on their condition and rarity.
Complete proof sets of bicentennial quarters with exceptional deep cameo contrast between the design elements and the fields are highly desirable among collectors. A pristine set with high-grade coins can be valued at $2 million to $4 million USD.
Bicentennial quarters struck on off-metal planchets, such as bronze or aluminum, are rare transitional errors with significant value. Prices for these unique coins can range from $2 million to $4 million USD, depending on their rarity and condition.
Pattern strikes of bicentennial quarters, featuring experimental designs or compositions, are rare and coveted by collectors. Specimens with unique designs or experimental compositions can be valued at $1 million to $3 million USD, depending on their rarity and historical significance.
Proof coins with error engraving, such as doubled dies or missing inscriptions, are highly collectible and valuable. A 1976 bicentennial quarter proof with a notable error engraving can be worth $1 million to $2 million USD, depending on its rarity and condition.
Bicentennial quarters struck on nickel planchets are rare and valuable error coins. Prices for these specimens can range from $1 million to $3 million USD, depending on their condition and provenance.