Error vs Variety vs Damage

What this classification means

A clear classification system separating one-off production mistakes, repeatable die varieties, and changes after the final strike. A useful identification does more than name an unusual shape. It explains when in production the feature formed, what physical evidence should remain, and which ordinary forms of damage can imitate it.

Diagnostic evidence to record

Ask whether the feature arose on the planchet, die, strike, or after the coin left production.

Repeatable method: start with Error or damage?, then use the identification workflow and value guide. The page below should add evidence specific to this error class, variety, coin, or damage lookalike.
• Compare with certified examples and mint-production references, not viral price claims.

Common lookalikes and failure points

Marketplace titles routinely combine these categories incorrectly.

A practical examination sequence

1. Confirm the host coin. Identify denomination, design subtype, date, mint, composition, and expected weight.
2. Describe before naming. Write what the metal actually does without using a marketplace label.

Value factors