Was this a "good dip"?

Discussion in 'Coin Chat' started by matchmaker, Jun 9, 2009.

Page 2 of 2
  1. GDJMSP

    GDJMSP Numismatist Moderator

    Not all dips are created equal, and neither are the people doing the dipping. Even the same person can have wildly different results with different coins even when they use the same product. This is because there are so many variables involved when it comes to the coins themselves. Since each and every coin is truly unique you are bound to get different results - it is unavoidable.

    And what you use to neutralize the dip and rinse the coin also depends on the coin. Copper, nickel, silver and gold will react differently with different substances. Regardless of that, I would never recommend using bicarbonate to rinse any coin. Distilled water and in some cases acetone are the only things that should ever be used.
     
    GDJMSP, Jun 10, 2009
    #21 + Quote Reply
  2. Avatar

    Guest User Guest



    to hide this ad.
  3. desertgem

    desertgem Senior Errer Collecktor Supporter



    GD answered it the same as I will. Water and acetone, and then good storage.

    Two years, it could have been dipping or not. The question would be the storage during that time. I know one part time dealer who has nice BU coins from rolls and good prices,but he has pudgy fingers, and after finding some prints on his coins, I use acetone rinse on any I buy routinely before I put into a holder.

    If you have a decade or so to go, dip some common Roosies, rinse different ways, place in different holders, place where you store your coins, and look at them every 2 or 3 months and gain the knowledge as to storage.

    Use common sense as to what use and when.

    Jim
     
    desertgem, Jun 10, 2009
    #22 + Quote Reply
  4. Collect89

    Collect89 Coin Collector

    Thank you Desertgem & GDJMSP,

    The nickel I am thinking of was originally in an ACACS small holder & then I had it crossed into an NGC holder. The coin had some light-brown toning which was mostly noticeable around the perimeter. After about 2-years, I was certain that the coin was getting progressively darker. The light brown on the perimeter had turned dark & had grown most of the way toward the center.

    In retrospect, this may not have been caused by a previous dip. It could have been caused by residue from an earlier album or holder. The toning then progressed while it was in the inert TPG holders.

    There was no way to know this would happen when we purchased the coin.

    Thanks for your reply &
    Very best regards,
    collect89
     
    Collect89, Jun 11, 2009
    #23 + Quote Reply
  5. GDJMSP

    GDJMSP Numismatist Moderator

    Based on the story you just related the toning is progressing because of the way you are storing the coin. You need to change that.
     
    GDJMSP, Jun 11, 2009
    #24 + Quote Reply
  6. Collect89

    Collect89 Coin Collector

    FYI only- It was stored in an NGC holder. After a couple years I sent it back to NGC (& consequently NCS). It is apparently neutralized & it resides in a different (but relatively identical) NGC holder today. It has been like this for more than a year. All appears to be fine today.

    Very best regards,
    collect89
     
    Collect89, Jun 11, 2009
    #25 + Quote Reply
  7. GDJMSP

    GDJMSP Numismatist Moderator

    There is a great deal more to proper storage than just the holder or slab the coin is stored in. No slab is airtight, nor is any coin holder you can buy. Coins can & will tone in the slab if improperly stored.

    So they must still be stored in an enclosed space that is dark & cool with relatively few, and minor, changes in temperature, and no air circulation whatsoever. They must be protected from humidity and desicants used to keep what humidity there is to a minimum.
     
    GDJMSP, Jun 11, 2009
    #26 + Quote Reply
  8. Collect89

    Collect89 Coin Collector

    got it.

    Thanks & very best regards,
    collect89
     
    Collect89, Jun 11, 2009
    #27 + Quote Reply
Page 2 of 2
Draft saved Draft deleted

Share This Page