The dual date 1776–1976 appeared on U.S. Bicentennial coins, the earlier anniversary model for America250.
The United States Mint placed the double date on the Washington quarter, Kennedy half dollar, and Eisenhower dollar. These were circulating commemorative coins created for the 200th anniversary of the Declaration of Independence.
The designs were struck in 1975 and 1976, but none of the three denominations carried a 1975 date. The dual date emphasized both the founding year and the anniversary year, making the coins easy to recognize as Bicentennial issues.
The temporary reverses were selected through a public design competition. The quarter showed a colonial drummer, the half dollar featured Independence Hall, and the dollar displayed the Liberty Bell superimposed on the Moon. America250 is a separate anniversary, so these coins belong to the 1976 Bicentennial rather than the 2026 celebration.