PART VI. Striking Errors:

Indents:

Full Indents

Definition: A full indent occurs when a coin or planchet is completely covered by a second planchet during the strike.  The two discs are then struck together.  Another term for a full indent is a “full uniface strike” or simply a “uniface strike”.

The indent can affect the obverse or the reverse face.  It can occur on a first or a second strike.  The indented coin can be struck within the collar or outside the collar.

This double-struck 1999 Lincoln cent received a normal first strike.  During the second strike it was struck out-of-collar beneath a planchet.