PART V. Planchet Errors:

Blanking and Cutting Errors:

Curved Clips:

Crescent Clip

Definition: The term “crescent clip” or “crescent curved clip” is used for coins struck on planchets with exceptionally large clips.  Alan Herbert defines a crescent clip as one that has subtracted more than 61% of the normal weight.  We feel this is too generous and use a threshold of 75%.

The images below show an undated cent with off-center strike on a crescent clip planchet. Images are courtesy of Heritage Auctions.