This guide presents doubled dies, striking errors, planchet errors, and off-center Lincoln cents No other coin series contains more error types than the Lincoln cent. From the first date in 1909, the S mintage contained coins with a horizontal S error. Almost every year minted contains a doubling error, some more pronounced than others. The most valuable error cents have doubling on the obverse that is pronounced with lettering or numbering clearly separated. Examples of very pronounced double die cents are the 1955, 1969-S, and 1972 coins. There is no other coin guide that presents the number of validated coin errors as this guide does.