What Is PVC Damage on Coins? How to Remove It

PVC damage on coins is the result of improperly storing coins in soft plastic flips or other credit card mint holders that contain PVC. The PVC chemical in the flips interacts with the metal of the coin creating a slightly acidic chemical reaction, which causes residual deposits to appear on the coin ‘s surface. copper coins are most vulnerable to PVC price, followed by silver, and then gold and platinum .

PVC damage appears as green, milky, or grey streaks or haze. In severe cases, it looks like bantam k spot on the open of the mint. PVC stands for polyvinyl chloride ; it is an additive used in plastics to make the substantial more ductile and less brittle. In coin gather, PVC is most frequently encountered in the clear formative flips in which coins are stored .

Fun Fact

As a general rule, the softer and more elastic the flip is, the more polyvinyl chloride it contains. The hard, cadaver, brittle types of flips ( made of Mylar ) do not contain any PVC. besides, some formative or Ziploc® bags may be condom for storing your coins. The best long-run repositing option is an archival quality plastic bulge made of arrant polyethylene or polyester. If the PVC residue on the surface of the coin is removed soon enough, the mint may escape with minimal price that is not visible to the naked eye. If the green PVC residue is left on the coin for a long time, it will start eating into the surface of the mint. When the park PVC remainder is removed, it will reveal the extent of the damage. In extreme cases, this will leave a series of microscopic pits and indentations that can not be repaired. Copper coins and coins that contain copper in their alloy are the most susceptible to PVC damage. conversely, gold coins are the most insubordinate to being damaged by PVC residue .

How to Determine If the PVC Contains Plastic

PVC remainder has a distinctive smell, kind of like the smell you get when you open a bum formative toy dog. In balmy cases of PVC contamination, you might not be able to detect the smell, but if you ever smell PVC after removing a mint from a cushy plastic flip, even though you do n’t see contaminant on the coin, you should treat the coin for PVC price anyhow as a precaution .

The merely positive way to determine if there is PVC in the formative that you are using to hold your coins is to have it analyzed by a pharmacist. unfortunately, most coin collectors do not have access to such a person nor would they be able to afford the analysis at a reasonable cost.

Another room to determine if a coin holder is made from formative that contains PVC is to do a “ destructive ” screen on the coin holder. This means that you will have to destroy your mint holder or album page to test it. Given that most coins cost more than the holders they are in, this may be a good investment of your money .

To do this test follow these simple steps ( note : This test should only be performed by a creditworthy adult ) :

  1. Take a stick pin (like the ones that is used in sewing) and poke it into the eraser head on the end of the pencil.
  2. Slightly heat the head of the pin with a lighter. Make sure it is hot enough to melt the plastic but not glowing red hot.
  3. Use the hot pin to melt some of the coin holder’s plastic onto the head of the pin.
  4. Use the lighter again to heat the melted plastic on the pinhead until it starts to burn.
  5. If the flame from the small amount of burning plastic has a green hue to it, the plastic more likely than not contains some amount of PVC.

How to Remove PVC From Coins

Removing PVC residue is dim-witted but left untreated, it will finally eat into the surface of the coin. merely taking the coin out of the offending somersault is n’t adequate ; once the PVC cycle has begun, the acidic PVC cycle will continue to degrade the mint ‘s coat until permanent wave PVC wrong results ( see the photograph above ). reputable grade services will encapsulate coins with PVC residue on them, however, they will indicate on the label that the coin has surface damage. This can significantly reduce the value of the coin .

Edited by : James Bucki

informant : https://ontopwiki.com
Category : Finance

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