Is this for real? MS67 and CAC!

Discussion in 'US Coins Forum' started by rlm's cents, Sep 17, 2013.

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  1. rlm's cents

    rlm's cents Numismatist

    rlm's cents, Sep 20, 2013
    #21 + Quote Reply
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  3. BadThad

    BadThad Calibrated for Lincolns

    Hummm...the link is jacked.
     
    BadThad, Sep 20, 2013
    #22 + Quote Reply
  4. Paul_62

    Paul_62 Just takin' it one day at a time

    I think it works now
     
    Paul_62, Sep 20, 2013
    #23 + Quote Reply
  5. NorthKorea

    NorthKorea Dealer Member is a made up title...

    After reviewing the listing, I really think the seller needs to correct the red on their white balance. The label is supposed to be blue, not white/pink, right?
     
    NorthKorea, Sep 21, 2013
    #24 + Quote Reply
  6. GDJMSP

    GDJMSP Numismatist Moderator

    Older PCGS slab labels are well known for changing colors.
     
    GDJMSP, Sep 22, 2013
    #25 + Quote Reply
  7. rlm's cents

    rlm's cents Numismatist

    rlm's cents, Oct 23, 2013
    #26 + Quote Reply
  8. EyeEatWheaties

    EyeEatWheaties Cent Hoarder

    im confused .. I guess the coin was returned? But why when the seller was so" up front" about the coin.


    This time .. a lot more subdued and matter of fact..

     
    EyeEatWheaties, Oct 23, 2013
    #27 + Quote Reply
  9. mark_h

    mark_h Somewhere over the rainbow

    Well there are a lot of people who might think it is a bad picture - and bid anyway trying for cheap win. Who knows.
     
    mark_h, Oct 24, 2013
    #28 + Quote Reply
  10. AWORDCREATED

    AWORDCREATED Hardly Noticeable

    The use of zinc over steel is normally for it to be a sacrificial metal to protect the steel underneath - when the zinc is finally eaten the steel corrodes next - unlike most other coin surfaces which strive to be inert.
     
    AWORDCREATED, Oct 24, 2013
    #29 + Quote Reply
  11. ToughCOINS

    ToughCOINS Dealer Member Moderator


    When exposed to moisture, it's worse for a coin to be stored in a nearly sealed holder than to sit out on a table or window sill. Why? Because once moisture enters the holder it takes a long time for it to escape again, whereas out in the open it can evaporate very rapidly, reacting with the coin for far less time. One of the reasons so many coins faired well in old wooden coin cabinets is because (1) the moisture had a greater affinity for the wood than for the metals, and (2) because there was so much surface area of the wood compared to that of the coins.

    With such cabinets no longer in widespread use among collectors, coins are not likely to be similarly spared and, being in holders that are substantially sealed in slabs, 2x2s, airtites, etc, one should always keep freshly dried dessicant where the coins are stored.
     
    ToughCOINS, Oct 24, 2013
    #30 + Quote Reply
  12. rlm's cents

    rlm's cents Numismatist

    Not quite. Although this may be true in water or other such media. However, in air, it forms a layer of zinc oxide over its surface. Zinc oxide is extremely stable and prevents further oxidation. Thus it keeps the base zinc from further corrosion. Aluminum does the same thing.
     
    rlm's cents, Oct 24, 2013
    #31 + Quote Reply
  13. AWORDCREATED

    AWORDCREATED Hardly Noticeable

    ^ notwithstanding ^ . Actually it is the same. I agree that the oxide is formed, but there by the zinc is consumed, and given wear or further influx of reactants things proceed. Nobody, and by that I mean: NOT ANYBODY ever expected a zinc plated steel planchet to stand up to use. It was a trade off for the war effort.
     
    AWORDCREATED, Oct 24, 2013
    #32 + Quote Reply
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