The Bicentennial Quarters, minted in 1976 to commemorate the 200th anniversary of the United States, are a popular series among coin collectors.
1976-S Proof Silver Bicentennial Quarter: This quarter was struck in San Francisco as a proof coin and is made of 40% silver. It's highly sought after by collectors due to its silver content and low mintage.
1976-D Bicentennial Quarter with Type II Reverse: Early in the minting process, a reverse die was used that featured a smaller lettering style for "United States of America." This variety is rarer than the more common Type I reverse.
1976-S Bicentennial Proof Quarter with No Mintmark: While most proof coins from San Francisco bear an "S" mintmark, there are a few instances where the mintmark was omitted. These error coins are rare and highly valuable.
1976-D Bicentennial Quarter Struck on a 40% Silver Planchet: Occasionally, a Bicentennial Quarter was struck on a planchet intended for a silver coin, resulting in a wrong composition error. These error coins are extremely rare and fetch high prices among collectors.
1976-S Bicentennial Silver Proof Set Quarter: In addition to the regular proof Bicentennial Quarters, there were also silver proof sets issued in 1976 that contained 40% silver versions of all coins, including the quarter.