Single-sided Woodies

Discussion in 'Coin Chat' started by GDJMSP, Sep 15, 2010.

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  1. rlm's cents

    rlm's cents Numismatist

    Ok, Thad. I have yet to hear what your theory is. Would you care to put it out there?
     
    rlm's cents, Sep 16, 2010
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  3. Leadfoot

    Leadfoot there is no spoon

    Yes. Buffaloes in particular are noted for this feature.
     
    Leadfoot, Sep 16, 2010
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  4. GDJMSP

    GDJMSP Numismatist Moderator

    Correct, common sense says that a different mix in the alloy has to be a different color. But I readily agree with you that as time passes the difference in the two colors becomes more pronounced due to the way the mixes tone differently.

    I just believe that you can see that difference, slight though it may be, from the get go. That you do not have to wait for years to see it.
     
    GDJMSP, Sep 17, 2010
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  5. GDJMSP

    GDJMSP Numismatist Moderator

    The first day I just had it sitting in my desk drawer tray. I placed on the window sill last night. The change in color in just 24 hours was dramatic. The area dipped only was quite a bit darker than it was. But the area cleaned with the eraser showed no change. So now there are 3 colors on the coin.

    And yes, I risned it thoroughly. Even rubbed it back and forth in my fingers under running water to get all dip residue off. Didn't have any acetone or I would have used that too.
     
    GDJMSP, Sep 17, 2010
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  6. BadThad

    BadThad Calibrated for Lincolns

    Obviously, something is causing it over and over. Mostly on one side, less often on both sides. Right now I can't say if it's a mint process or post-mint. I can tell you this, Doug is wrong about being able to "see" the woodgraining on a fresh coin. Unless he has a EDXRF built-in to his eyes, there's no way in hell somebody could see this until toning begins. It's the difference between the poorly mixed copper and well mixed copper that creates the graining effect. The difference is so small that you won't be able to tell until the coin tones. At that point, the metals react differently to the gases the coin is exposed to.

    Right now my best, educated guess is that something was getting to the surface when the planchets were prepared. It could be that either the top or bottom roller was contaminated and "pressed" the contaminant into the planchet. These modern woodies just don't look anything like the improperly mixed allow woodies from the 20's-30's. I don't think they are caused by poor alloy mix.
     
    BadThad, Sep 17, 2010
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  7. BadThad

    BadThad Calibrated for Lincolns

    Well, can you see the lines reappearing?
     
    BadThad, Sep 17, 2010
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  8. GDJMSP

    GDJMSP Numismatist Moderator

    Not at all.

    And these lines cannot be on the planchet either because the strike would destroy them. They have to be getting on the coin after it leaves the mint.
     
    GDJMSP, Sep 18, 2010
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  9. rlm's cents

    rlm's cents Numismatist

    I assume that the grain never reappeared?
     
    rlm's cents, Oct 15, 2010
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  10. coin-crazy

    coin-crazy Senior Error Searcher

    I recently found a one sided woodie.There out there!!!
     
    coin-crazy, Oct 16, 2010
    #29 + Quote Reply
  11. cubenewb

    cubenewb Consumer of Knowledge

    This thread isn't contesting the prevalence of perceived "one sided woodies"; it's a debate of whether or not such an anomaly is a legitimate error or simply PMD


    I would also like to see if there are any updates on this experiment?
     
    cubenewb, Oct 16, 2010
    #30 + Quote Reply
  12. coin-crazy

    coin-crazy Senior Error Searcher

    Its not an error,its just how the metal mixed in that different way.Whats the big deal?
     
    coin-crazy, Oct 16, 2010
    #31 + Quote Reply
  13. GDJMSP

    GDJMSP Numismatist Moderator

    It hadn't the last time I checked which was about a week ago. I'll post new pics this coming Tues or Wed.
     
    GDJMSP, Oct 16, 2010
    #32 + Quote Reply
  14. GDJMSP

    GDJMSP Numismatist Moderator

    The big deal is that you cannot have improperly mixed metal on just one side of the coin.
     
    GDJMSP, Oct 16, 2010
    #33 + Quote Reply
  15. GDJMSP

    GDJMSP Numismatist Moderator

    OK - here's some pics taken after just 3 days. But notice how much toning has happened in just that short time.
     

    Attached Files:

    GDJMSP, Oct 28, 2010
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  16. GDJMSP

    GDJMSP Numismatist Moderator

    Now here's some pics taken after 43 days. The toning is considerably more advanced. But still no lines.

    But look at how the area hit with the pencil eraser looks.
     

    Attached Files:

    GDJMSP, Oct 28, 2010
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  17. rlm's cents

    rlm's cents Numismatist

    Your pix don't surprise me a bit.

    You missed commenting on this one posted by Exchequer.


    View attachment 99813
     
    rlm's cents, Oct 28, 2010
    #36 + Quote Reply
  18. BadThad

    BadThad Calibrated for Lincolns

    Interesting, seems to confirm that it's a post-mint surface anomaly.
     
    BadThad, Oct 28, 2010
    #37 + Quote Reply
  19. jallengomez

    jallengomez Cessna 152 Jockey

    I'm still not convinced. I'm about to start my own experiment with a double-sided woody. Hopefully I can get the initial pics up tomorrow.
     
    jallengomez, Oct 28, 2010
    #38 + Quote Reply
  20. rlm's cents

    rlm's cents Numismatist

    Look real close and you might change your mind.
     
    rlm's cents, Oct 29, 2010
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  21. jallengomez

    jallengomez Cessna 152 Jockey

    Unless I'm seeing things, those lines are toning right back.

    penny test 011 +43.jpg
     
    jallengomez, Oct 29, 2010
    #40 + Quote Reply
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