PART VI. Striking Errors:
Counterbrockages:
Early, Mid & Late-Stage Counterbrockages:
Definition: A counterbrockage occurs when an error coin with a brockage is struck into a planchet.
NOTE: Counterbrockages can be in-collar, out-of-collar, centered, or off-center. They can be aligned with, or rotated relative to, the opposite, die-struck face. The degree of expansion and distortion depends on how many previous planchets were struck and whether one or both participants in the error were confined by the collar.
The 1975 cent shown displays an early-stage counterbrockage of the obverse design on the obverse face. It was produced when an obverse die cap with a brockage of the obverse design on the reverse face struck a succession of planchets, this being one of them.