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Color change inside a case?

JoeArcJoeArc Posts: 2
in U.S. Coin Forum
Do any of you folks have experience with coins changing colors? I have a slabbed Columbus commemorative, that I swear was brighter when I first got it. There's some splotches that are slightly "orange-er"(more oxidized?) than rest of the coin. They're on both sides. I don't see any ridges like a finger print. Maybe I didn't notice it before, but I'd hate to have it get worse

Comments

  • krankykranky Posts: 8,709 ✭✭✭
    A coin that wasn't rinsed properly after dipping can develop blotches later. Is the coin slabbed? If not, what are you storing it in?

    [edit] I guess a slabbed Columbus would be... slabbed. image [/edit]

    New collectors, please educate yourself before spending money on coins; there are people who believe that using numismatic knowledge to rip the naïve is what this hobby is all about.

  • rainbowroosierainbowroosie Posts: 4,875 ✭✭✭✭
    Older NGC holders can be major culprits...
    "You keep your 1804 dollar and 1822 half eagle -- give me rainbow roosies in MS68."
    rainbowroosie April 1, 2003
  • coinspeculatorcoinspeculator Posts: 209
    doctored coins will loose tone and become dark.
    toned coins can continue to get new color as long as the sulfer on the coin is not nuetralized.
    also air is needed so if its air tight it may stop toning.
  • messydeskmessydesk Posts: 20,343 ✭✭✭✭✭
    I have some dollars with "ANACS Toning," which is a purple upper obverse and lower reverse rim. Could be that these had been dipped at some time before being holdered.
    John
    Keeper of the VAM Catalog • Professional Coin Imaging • Prime Number Set • World Coins in Early America • British Trade Dollars • Variety Attribution
  • coinguy1coinguy1 Posts: 13,484 ✭✭✭
    Coins, whether previously dipped, doctored or not, can react or oxidize in their holders. The type of holder and the environment it is stored in can make a big difference, but no holder is completely impervious.
  • LongacreLongacre Posts: 16,717 ✭✭✭
    The other guys are the experts, so I will just say Welcome!
    Always took candy from strangers
    Didn't wanna get me no trade
    Never want to be like papa
    Working for the boss every night and day
    --"Happy", by the Rolling Stones (1972)
  • coinnut86coinnut86 Posts: 1,592 ✭✭✭


    << <i>The other guys are the experts, so I will just say Welcome! >>


    image
    image
    image
  • morgannut2morgannut2 Posts: 4,293 ✭
    If it's picking up brownish orange spots especially around the letters it was often dipped improperly--If you send it to NGC for conservation they can redip/remove the residue and it should be OK. If there are active spots a PCGS dealer can send in a PCGS coin and have it stablized for the cost of the holder--but they have to write a letter. Welcome---image
    morgannut2

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