PART V. Planchet Errors:
Bonding / Bonding Mill Errors:
Struck Clad Layer:
Split Off After Strike
Definition: A clad layer will sometimes separate from a coin after the strike. The detached clad layer will show a normal die-struck design on its outer face, and blurred incuse, mirror-image version of the same design on its inner face.
As a practical matter, it is almost impossible to distinguish this error type from clad layers that are struck together with a normal planchet.
An undated clad layer from a Roosevelt dime is shown below. It may have separated after the strike or it may have been fed into the striking chamber beneath a normal planchet.
Images are courtesy of Heritage Auctions.