The value of a one-dollar coin with the dual date "1776-1976" depends primarily on its metallic composition and physical condition. This coin is the Bicentennial Eisenhower Dollar, which was minted in 1975 and 1976 to commemorate the 200th anniversary of the United States.
There are two main versions of this coin. The most common version is the copper-nickel clad coin, which was produced for general circulation. These coins were minted in Philadelphia (no mint mark) and Denver (D mint mark). If you find one of these in pocket change, its value is typically just its face value of one dollar. In uncirculated condition, these clad dollars can be worth more to collectors, generally ranging from about $4.50 to $11, depending on their grade and a minor design variation known as Type 1 or Type 2.
The second version was specifically created for collectors and contains 40% silver. These were minted in San Francisco and bear an "S" mint mark. They were never intended for circulation and were sold in special government packaging. The value of these silver coins is significantly higher. An uncirculated 40% silver version is typically valued between $14 and $18. The proof version, which has a mirror-like finish and was also sold to collectors, is often valued at around $20.
The coin's condition, or grade, is a critical factor in its final value. While most collector-grade silver Eisenhower dollars are valued in the $14 to $20 range, examples that have been professionally graded and preserved in near-perfect condition can be worth much more. For instance, a top-grade, professionally certified uncirculated silver Bicentennial dollar can be valued in the thousands of dollars, though such specimens are extremely rare.
