1970 S RPM Attribution Challenge

Discussion in 'Error Coins' started by SorenCoins, Jun 21, 2026.

  1. SorenCoins

    SorenCoins Well-Known Member

    Hi all! Happy Father’s Day :)

    Came across this 1970 S Large Date cent in a lot of coins I bought while in Switzerland. What is going on with this mintmark? Looks like the top of the S has a die chip or damaged mintmark punch? In the lower loop of the S it looks like the middle bar of the S has been replicated three times?

    I am assuming this is an RPM and not a damaged mintmark punch, but could be wrong there. It looks similar to some on CopperCoins and VarietyVista, but struggling to see a match.

    What do you all think?
    IMG_6842.jpeg IMG_6841.jpeg IMG_6840.jpeg IMG_6839.jpeg IMG_6838.jpeg
     
    Neal likes this.
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  3. alurid

    alurid Well-Known Member

    A coin I have looks similar to yours. I alway thought there was a die chip inside to mintmark. Both coins being struck with a damaged mintmark punch is a possibility.
    Note my coin is a small date, which had to be made with a different die.
    But yet has a similar mm.
    20240307_180840.jpg
     
  4. alurid

    alurid Well-Known Member

    Here is a large date cent with a similar mm. Not a good defining shot,
    but the chip shows.
    20240307_182023.jpg
     
    SorenCoins likes this.
  5. SorenCoins

    SorenCoins Well-Known Member

    Wow, quite interesting! Thank you for pulling out some examples from your collection for some comparative study. Very interesting to see the same "chip." Its reoccurrence makes me think it is a damaged mintmark punch. What do you make of the tripling(?) in the lower loop of the mintmark on my coin and on your small date?
     
  6. alurid

    alurid Well-Known Member

    I am not sure that the marks in the bottom loop has anything to do with being an RPM, I just figured they were marks made when the press operator was dressing (cleaning) the die. Variety Vista does not have a listing for such a coin.
     

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