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sommerj · October 8, 2008 2:40PM

Ok first off thank you for taking a look..

numisma · October 8, 2008 5:31PM

It is a die flaw (i.e. break or gouge or something). In 1935 the dates were hubbed into the working dies along with everything else, so overdates would have been virtually impossible. Such a hubbing error did occur with the 1942/1 dimes, however. More food-for-thought: if it were an overdate, it would have been more logical if the undertype were from an earlier year, not from a future die. For example, a 1935 over 4 instead of 1935 over 6.

Edited to add:

After posting this I check Chuck Daughtrey's book Looking Through Lincoln Cents and he provides more insight into your coin. According to his book, Chuck (coppercoins on this forum) suggests that the flaw you see is found on 1935 cents from all three mints and must have been part of the plaster mold used to make the master dies dated 1935. Perhaps coppercoins can provide you with more information. P.S. -- he also states that this is a common occurence on 1935 cents and carries no premium.