Part V: Planchet Errors:

Interstrike Damage:

Definition: Interstrike damage can only be identified in double-struck and multi-struck coins.  It is damage that is inflicted between strikes.  It’s highly variable in appearance.  Shown here is a double-struck 2000-D nickel that was damaged between the first and second strikes.  The damage consists of two flat facets at 12:00 and 6:00.  The southern facet was crimped by the second, off-center strike.  The southern facet shows fine, oblique ridges. The northern facet is smooth, with some oblique scrapes that seem to have been received after the facet formed.

The presence of inter-strike damage may indicate the presence of a delayed second strike, but additional evidence is required to draw the latter inference.  See Delayed Second Strike.

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