1976 Bicentennial Quarter – The Bicentennial Quarter, issued in 1976 to celebrate the 200th anniversary of the United States' independence, features a drummer on the reverse side and the dual date "1776-1976".
1932-S Washington Quarter – This is one of the key dates for collectors of Washington quarters. Minted during the Great Depression, fewer copies were produced, particularly from the San Francisco mint, making them more valuable.
1932-D Washington Quarter – Like its S-mint counterpart, the Denver-minted 1932 quarter is highly prized due to its low mintage numbers, making it one of the rarest in the Washington quarter series.
1942-P Washington Quarter – This coin featuring a mint error where the Philadelphia mint accidentally struck a few over a 1941 Canadian quarter. These are highly rare and valued by collectors.
1950-D/S Overmintmark Quarter – A rare mint error where a Denver mint mark (D) was struck over a San Francisco mint mark (S). Few examples are known to exist, raising its value among collectors.
1937 Doubled Die Obverse – This quarter features noticeable doubling on its obverse side, particularly around the motto "IN GOD WE TRUST". Error coins such as this can fetch higher prices.
1964-D Washington Quarter with a Double Die Reverse – This mint error shows doubling on the reverse side, particularly on the phrase "E PLURIBUS UNUM." As errors from this era become harder to find, their value increases.
1970-S Proof Washington Quarter Struck on a 1941 Canadian Quarter – An incredibly rare error, this quarter was struck using a blank that already had a 1941 Canadian quarter on it. Given its unique circumstances, it is highly sought after