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I was at an antique store yesterday and purchased a 1976 proof set which upon examination revealed an mms-009 s mint mark on each and every coin. The only doubled s mm which is listed is on the Lincoln 1974-s (ODV-031). Experts please advise if this is of any significance.
link........................http://varietyvista.com/Mintmark%20S...74SMMS009c.jpg
The article says" It is known on three (3) denominations of 1975, including the Lincoln cent, Roosevelt dime and Washington quarter (dual dated 1776-1976). The stage A (perfect) punch is known in 1975, although in a somewhat worn state (now designated as stage D). The stage B (split upper serif only) is not known in 1975 at this time.
The article also states that if "TRUE RPM THEORY"......"If the replacement took place toward the end of year, then 1975-S and dual dated Bicentennial RPMs would have been made early and as the puncher caught up, the RPMs were eliminated altogether." Which indicates that this mm should not exist on 1976's.
Similarly the RPMPs Theory says..."The key here seems to be in the fact that no stage B (split upper serif only) coins are known for 1975 or Bicentennial coins, while stage C (full doubling) are known for both 1974 and 1975. The 1974-S doubled mintmarks, while not common, are nonetheless available. It is difficult to find the 1975-S and Bicentennial doubled mintmarks. This tends to indicate that the RPMP began to wear off early in the die production cycle of 1975. Of course this does not mean that true RPMs do not exist for 1974 and 1975. The prime example is the 1975-S Roosevelt Dime RPM-001. There is no mistaking this as a RPMP. "
So how do I get the mms-009 mm on the 1976S cent;nickel;dime;half;and dollar?
link........................http://varietyvista.com/Mintmark%20S...74SMMS009c.jpg
The article says" It is known on three (3) denominations of 1975, including the Lincoln cent, Roosevelt dime and Washington quarter (dual dated 1776-1976). The stage A (perfect) punch is known in 1975, although in a somewhat worn state (now designated as stage D). The stage B (split upper serif only) is not known in 1975 at this time.
The article also states that if "TRUE RPM THEORY"......"If the replacement took place toward the end of year, then 1975-S and dual dated Bicentennial RPMs would have been made early and as the puncher caught up, the RPMs were eliminated altogether." Which indicates that this mm should not exist on 1976's.
Similarly the RPMPs Theory says..."The key here seems to be in the fact that no stage B (split upper serif only) coins are known for 1975 or Bicentennial coins, while stage C (full doubling) are known for both 1974 and 1975. The 1974-S doubled mintmarks, while not common, are nonetheless available. It is difficult to find the 1975-S and Bicentennial doubled mintmarks. This tends to indicate that the RPMP began to wear off early in the die production cycle of 1975. Of course this does not mean that true RPMs do not exist for 1974 and 1975. The prime example is the 1975-S Roosevelt Dime RPM-001. There is no mistaking this as a RPMP. "
So how do I get the mms-009 mm on the 1976S cent;nickel;dime;half;and dollar?
Here is the mm on the IKE
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