I believe this is a die clash. Here's a definition of "strike-through."
Quote:
Occurs when a foreign object lies on top of the planchet and leaves an impression of itself when struck into the coin. A wide variety of objects have been reported including grease, string, cloth, hair, plastic, bandaid, staples, etc.
Occurs when a foreign object lies on top of the planchet and leaves an impression of itself when struck into the coin. A wide variety of objects have been reported including grease, string, cloth, hair, plastic, bandaid, staples, etc.



















