U.S. Bicentennial quarters, half dollars, and dollars carried the double date 1776–1976.
The paired dates represented the founding-era year associated with American independence and the 200th-anniversary year. The special coins were struck in 1975 and 1976, but all carried the 1776–1976 inscription rather than a single year.
Congress authorized temporary reverse designs for three circulating denominations: the Washington quarter, Kennedy half dollar, and Eisenhower dollar. The quarter showed a colonial drummer, while the half dollar and dollar used other patriotic Bicentennial designs.
A common mix-up is assuming coins struck in 1975 should bear 1975 as their second date. They do not: the anniversary dates remained 1776 and 1976. Both copper-nickel and silver-clad versions were produced, and the coins became one of the most visible everyday reminders of the Bicentennial.