PART VI. Striking Errors:
Struck Through a Foreign Object:
Struck Through a Clad Layer
Definition: This error type occurs when a detached clad layer and an intact planchet enter the striking chamber together. The ensuing strike leaves one face with a shallow indentation and blurred design details in the floor of the indentation.
The 1969 Kennedy half dollar pictured below was struck-through a clad layer that entered the striking chamber on top of the planchet represented by this coin. Coverage was incomplete, leaving the coin with a large, shallow indentation and blurred design details.
Images are courtesy of Heritage Auctions.