Tuebits
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2007 Roosevelt MM
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Hi Tuebits - Mint marks are still "punched" in, the main diffrence is that in 1990 they were added to the master die instead of the tedious job of adding them to the working die. This did away with the possibilities of having a "repunched" or secondary mint mark, EXCEPT in the instances where the mint mark was actually doubled due to a doubled die.
As for your mint mark. From the pictures it appears to be a case of die deterioration with the heavy metal flow lines in and around the mint mark in question. This is commonly seen, especially with the dime.
BJ NeffMember of: ANA, CCC, CONECA, Fly-in-club, FUN, NLG & T.E.V.E.C.
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