A clipped planchet error occurs when the coin blank (planchet) is not properly cut from the metal strip, resulting in a piece missing from the coin. Clips can be curved, straight, ragged, or irregularly shaped.
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Scan My CoinThe most common clip type. A curved bite taken from the edge where the blank overlapped a previously punched hole.
How to check: Look for a curved indentation at the rim. The area opposite the clip (180 degrees) should show a weak strike area called the Blakesley effect.
$5 - $75A straight edge on the coin where the blank was punched at the end of the metal strip.
How to check: One edge of the coin appears straight instead of curved. The Blakesley effect should be present opposite the clip.
$10 - $100An irregular, jagged clip caused by imperfect metal strip cutting.
How to check: The clipped area has an uneven, rough edge rather than a smooth curve or straight line.
$10 - $75More than one clip on the same coin, which is significantly rarer.
How to check: Look for two or more separate clip areas on the coin. Each should show the Blakesley effect opposite it.
$25 - $200+Genuine clips show the Blakesley effect — a weak strike area directly opposite the clip. Damaged coins do not. The clip edge should also be consistent with the coin's metal, not rough or tool-marked.
Values range from $5 for small clips on common coins to $200+ for large clips on scarcer denominations. The key factors are clip size, visibility of the date, and denomination.
Clipped planchets occur when the blanking press punches overlapping holes in the metal strip, or when the strip is not advanced far enough between punches.
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