Check the listing for details. 2009-P BU Professional Life Lincoln Cent Reverse Side Long Die Gouge Error. Color: RD. Listed at 4.99 USD. This 2009 Philadelphia minted Professional Life Reverse Lincoln cent has a Long Die Gouge from between Abe's legs, and then extending eastward through the lower left window, continuing to the 3rd windows of the Illinois State Capitol, where young Abe practiced his "Professional Life" as a new lawyer. Die gouges occur when the working dies are handled and polished, abraded or tooled by Mint employees to remove crud and other foreign material from them. Errors such as these are rarer and potentially valuable to collectors. Mint inspectors examine coins and remove defective dies as soon as the resulting coins with die anomalies like these are spotted, often creating a rarity. The total number of errorslike these is never really known for certain, but normally, working dies are routinely replaced after they show signs of breakage or wear, usually after 200,000-300,000 coins are minted with them. Sometimes, working dies are replaced much earlier, after only tens, hundreds or thousands of them are produced. I have only a limited number of these errors, although I lookedfor more of them in similar rolls from the same source, but found no more. A rare error to add to your collection! Side Note:Some coins, like the 2004-D Wisconsin State Quarters "Extra Leaf" errors, are believed to have been purposely created by a Mint employee. Nevertheless, they are desirable and costly in BU condition. This 25¢ coin is NOT included in this deal, but they can be found selling in various auctions for $100 or more!(See example of the "Low Leaf" variety in final photos above.)