I have been reading The Error Coin Encyclopedia, Fourth Edition by Arnold Margolis and Fred Weinberg and came across a chapter on "The Rolling Fold"--they called it a new error coin type. Coin World also ran an article on January 16, 2011. After reading the description and conclusion regarding the anomaly and looking at the pictures and drawings provided, I feel as though I have come across at least one of these in the past couple years. I usually keep anything that seems unusual to me so I can re-examine them as I become more informed, so I'm going to go through what I have. In the mean time, I was wondering if anyone has an example of a Lincoln with a rolling fold you'd care to post. Also, I don't see this listed in our glossary nor on Error-Ref (unless it's called something else now), so I'm wondering...is this really a collectable error?