A woody–woodgrain marks on a coin–is caused by an improper alloy mix whereas similar marks are caused by dirty rollers at the Mint. Woodies are collectible. Roller marks are not.
A woody has irregular, streaky, wood-like toning, usually red brown often mixed with lighter brass-like colors. The lines are uneven, splotchy and on both sides of the coin. They often appear on older Wheat and Indian Head Cents.
Roller marks are easy to identify. They are straight and parallel. They usually appear on both sides of a coin, especially ones minted between 1978-1984.
Here is a handy chart:
| Feature | Woody (Improper Alloy) | Roller Marks (Damage) |
|---|---|---|
| Appearance | Irregular, splotchy, wood grain texture | Straight, uniform, parallel lines |
| Color | Varies (Red/Brown/Brass) | Same as the rest of the coin |
| Depth | Surface toning, usually flush with metal | Shallow, incuse lines (cut into the metal) |
| Texture | Usually smooth | Scratched, feels textured |
| Consistency | Random streaking | Uniform, consistent width |
Woodies are collectible but values depend on the condition and mintage/rarity of the coin. Most Wheat cents sell for $5-50; Indian cents, $10-75. Uncirculated ones can command high prices–basically, what one is willing to pay. Example:
If you are bidding on or buying a coin, make sure you can tell the difference. Roller mark coins are often mislabeled as woodies. Examples:
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