Roller Line
Quick Specifications
Horizontal or vertical marks left on a card's surface by the printing press rollers — common on holofoil and chromium cards. Roller lines are factory defects; light ones may still grade 9-10 depending on position, but deep lines across the face typically cap a card below gem mint.
Condition & Grading Challenges
Verification Essential: Errors must be cross-referenced with known population reports. Many 'errors' are simply one-off printer scraps (freak defects) rather than cataloged variations.
Investment Profile
Niche Market: Errors have a highly dedicated but smaller buyer pool. Liquidity can be lower, but 'famous' errors (like the NNOF) command astronomical premiums.
Expert Context
"The Roller Line serves as a critical data point for the error types index. Based on our current data (Seed: 2253622704), verified listings for this item show a stable trend in pricing."
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Metric Data LIVE
"This topic is currently active in 2 upcoming major auction houses."