10 Over 09

One major variety is the 1810/09 Classic Head Large Cent (Penny) overdate error. This variety depicts an 1810 date struck over an 1809 date. This resulted in the last two digits "09" appearing under the "10". This can be clearly identified by noticing most of the underlying "0" showing up around the "1" and part of the underlying "9" showing up below the last "0".