On the 2009-P LP2 there were a lot of doubled dies on both sides on these. I got a stash of someones collection that was a filled plastic beer bottle of cents. It took him years to fill the huge bottle. So there were many years of BU coins in this bottle. I saved the AU/BU coins to search again sometime in the future when new thing maybe discovered since then. I've not check back on them yet. I put them in tubes years ago. Someday? So someone may have been saving them and someone else cashed them in. (I always figured, if they were nicest coins, I'd save them for another look years later) Rest, I put back to work.