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Known Errors

Doubled Die Obverse

Doubling visible on Kennedy's hair, the date, or LIBERTY lettering caused by multiple hub impressions.

How to check: Focus on Kennedy's hairline above the ear and the TRUST in IN GOD WE TRUST. Any shadow or shelf-like doubling indicates a doubled die.

$25 - $500+

Missing Clad Layer

One or both copper-nickel clad layers separated from the copper core before or during striking.

How to check: The coin will appear copper-brown on the affected side and may weigh less than the standard 11.34g.

$50 - $300

Die Crack / Cud Error

A crack in the die creates a raised line on the coin. A cud is a large die break at the rim.

How to check: Look for raised irregular lines across the design or raised blobs of metal at the rim edge.

$5 - $200+ for major cuds

Clipped Planchet

A portion of the coin blank was cut away before striking, creating a curved bite out of the coin.

How to check: Look for a curved indentation along the rim. The opposite side of the clip often shows a weak strike area called the Blakesley effect.

$10 - $100

Quick Checks

Frequently Asked Questions

What Kennedy half dollar errors are most valuable?

The most valuable include 1964 heavily doubled die varieties ($500+), wrong planchet errors ($1,000+), and major off-center strikes. The 1974-D doubled die reverse is also highly sought after.

Are modern Kennedy half dollars worth checking for errors?

Absolutely. Modern Kennedy halves from 2000-present still have die cracks, off-center strikes, and clipped planchets. They are less commonly searched, so errors may go unnoticed.

How do I scan my Kennedy half dollar for errors?

Upload a clear, well-lit photo of both sides to ErrorHunt. Our AI analyzes 67+ error types and gives you instant results with confidence scores and estimated values.

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