PART V. Planchet Errors:

Bonding / Bonding Mill Errors:

Missing Clad Layer:

Full:

Before Strike

Definition: One clad strip was not properly bonded to the core strip by the bonding mill. This caused the clad to layer separate from the copper core after blanking but before the coin was struck.

This 1977 quarter dollar was struck on a planchet that lost its obverse clad layer after blanking but prior to the strike.  It weighs 4.70 grams in comparison to a normal quarter, which weighs 5.67 grams.