The USA Half Dollar 1926 Sesqui (Sesquicentennial of American Independence) is a commemorative silver coin issued to mark the 150th anniversary of the signing of the Declaration of Independence (1776–1926). It was struck for the Sesquicentennial International Exposition held in Philadelphia.

Composed of 90% silver, the obverse features conjoined portraits of George Washington and President Calvin Coolidge — the only time a sitting U.S. president has appeared on a U.S. coin. The reverse depicts Liberty Bell superimposed on the Independence Hall.

This coin is a notable issue among classic U.S. commemoratives and remains a popular collectible.