1967 Lincoln Cent 3.4g

Discussion in 'Error Coins' started by Luckyr, Mar 1, 2021.

  1. Luckyr

    Luckyr New Member

    Hi!

    Any thoughts on why this Lincoln cent would weigh 3.4g instead of 3.1g?

    I double checked the weight several times and against several other 67 cents. Every time it is .3g heavier.

    Thanks! 29BC15DE-ED69-446A-A553-D219174321F6.jpeg D4EFB4B6-7187-4AA9-B84F-E66F23A2D8A1.jpeg 4DC5B0DA-7DA2-4390-9FD2-492533703531.jpeg C94F8641-7F53-43C5-828D-3C58A139DB02.jpeg 93A3F9BF-3E81-4CE3-85DF-FA361CA01989.jpeg D2516512-6BE2-4CB1-92E0-8324C686CB16.jpeg
     
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  3. potty dollar 1878

    potty dollar 1878 Florida girls have to love walking there sharks.

    It's a little under tolerance that's all had a rough 54 years supposed to weigh around 3.11 grams.
     
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  4. eddiespin

    eddiespin Fast Eddie

    At that weight it's roughly 10% over tolerance. If it took on .29g of crud that would do it. Take a dollar bill and carefully cut 1/3rd of it off and weigh it. Roughly .3g. That's roughly how much extra weight this coin had to take on. A dollar bill is 1g.
     
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  5. paddyman98

    paddyman98 Let me burst your bubble! Supporter

    Struck on a bit thicker than normal planchet.
     
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  6. Collecting Nut

    Collecting Nut Borderline Hoarder

    A little heavy but still fine. Just struck on a slightly thicker planchet.
     
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  7. potty dollar 1878

    potty dollar 1878 Florida girls have to love walking there sharks.

    thicker?I'm confused.
     
  8. paddyman98

    paddyman98 Let me burst your bubble! Supporter

  9. potty dollar 1878

    potty dollar 1878 Florida girls have to love walking there sharks.

    Yes I know that but on the scale it says the cent weighs 3.4 but its supposed to weigh 3.11 so how is it a thick planchet im thinking thin?am i missing something.
     
  10. paddyman98

    paddyman98 Let me burst your bubble! Supporter

    Yes you are.. 3.4 is heavier than 3.11

    add a 0 at the end 3.40
     
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  11. potty dollar 1878

    potty dollar 1878 Florida girls have to love walking there sharks.

    ok now I understand forgot about that im tired good night.
     
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  12. desertgem

    desertgem MODERATOR Senior Errer Collecktor Moderator

    I will ask, but just to confirm, not say something bad.
    1. Do you have a calibration weight that came with the scale ( most likely no)
    2. Is the scale properly tared before putting the coin on?
    3. Do you have anything that says 1 gram on it? a single sweetner package usually weighs one gram of sweetner ( it will say on the package) and can be used as a comparison.

    Jim
     
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  13. eddiespin

    eddiespin Fast Eddie

    If he’s got a dollar bill he’s got something that weighs 1 gram.
     
  14. Heavymetal

    Heavymetal Supporter! Supporter

    Since your scale reads to tenths of a gram only, your coin could be between 3.35 and 3.45 actually
    Still a nice find
     
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  15. Collecting Nut

    Collecting Nut Borderline Hoarder

    The planchets are cut from sheets. Not all sheets or even a small section of the sheet can be thicker or thinner than it should be.
     
  16. Luckyr

    Luckyr New Member

    thanks for the suggestions.

    I did calibrate with 500g. That’s what you have to do with this scale. It’s just a cheap scale.

    I did do tare several times.

    the scale is definitely not great, the same coin can vary by .4g sometimes, but this one is always .3 heavier than any other coin m weighing at the same time.
     
  17. Luckyr

    Luckyr New Member

    Thanks everyone!
     
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  18. Michael K

    Michael K Well-Known Member

    As Paddy says a thicker planchet. While it is out of tolerance, it's only slightly out.
    2.98- 3.24. But it is cool and worth keeping.
    And as Collecting said, they used to roll out the sheets, sometimes they are thinner, and sometimes they are thicker. (Not sure how they do the zinc junk for today.)
     
  19. Conder101

    Conder101 Numismatist

    Same way, cast the zinc into ingots, roll the ingots out into strip, punch blanks for the strip, upset the edges of the blanks. Then barrel plate the upset zinc blanks with copper. Steps are the same as with the copper alloy cents except for the plating.
     
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