Struck Through Grease

What this classification means

Grease or compacted debris fills die recesses and prevents parts of the design from striking fully. 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

Missing detail should have soft boundaries and no removed metal; nearby fields and opposite face help test the explanation.

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

Wear, abrasion, weak strike, polishing, filled letters from damage, and altered surfaces are frequently mislabeled.

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