PVC Residue and PVC Damage on Coins
PVC Residue on Coins
Have you seen coins like this for sale, in dealers stock books at shows, in public auction lots, eBay items or even coins in your own collection?
PVC: "Polyvinyl Chloride" is a chemical used in coin flips and protective sheets. PVC can damage coins, search for archival storage holders instead.
Raw coin: a coin that has not been graded or "slabbed" by a grading service.
PVC: see polyvinyl chloride, the chemical plasticizer that can damage coins.
PVC damage: the damage caused to a coin by polyvinyl chloride.
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PVC damage
A film, usually green, left on a coin after storage in flips that contain PVC. During the early stage, this film may be clear and sticky.
PVC flip ...
PVC
An acronym for polyvinylchloride, a chemical which is found in many FLIPS. If a coin is kept in such a holder for a long period of time, PVC will produce a residue which will turns a coin's surfaces green.
Q ...
PVC - Poly Vinyl Chloride. This chemical is present in soft plastic flips. It's the chemical that keeps the plastic soft. It also will put a greenish film on coins. If left too long in PVC flips, a coin can be damaged permanently.
PVC
Short for polyvinyl chloride.
PVC damage
A film, usually green, left on a coin after storage in flips that contain PVC. During the early stage, this film may be clear and sticky.
PVC damage
A film left on a coin after storage in flips that contain PVC.
PVC flip ...
PVC - Polyvinyl Chloride - a substance used in the making of certain plastics. When coins are stored in holders made with PVC, the chemical reaction leaves a green slimy film on the over time, will ruin the coins surfaces.
Q ...
PVC -
Poly-Vinyl Chloride, a somewhat active chemical found in some types of plastic coin flips. PVC will cause some coins to tone or turn green over time.
PVC
Polyvinylchloride, a plastic that is clear, very flexible, and easy to work with. Used extensively in coin holders.
PVC
"Polyvinyl Chloride" is a softening chemical used in plastic flips and protective sheets.
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PVC
A chemical (polyvinyl chloride) used in come coin flips to keep the plastic soft and pliable. PVC can break down and leave slimy film on the coin.
PVC - A coin designated as having PVC (polyvinylchloride) if caught early enough can be easily remedied.
PVC - Poly Vinyl Chloride (or PolyVinyl-Chorine). PVC is sometimes used in the manufacturing of plastic to add a flexibility or softness to it. Warning: Do NOT Use Coin holders containing PVC.
Pure acetone - PVC contamination occurs when the PVC in a coin holder causes green spots or an oily film on your coin. In order to remove this, use pure acetone, which you can find at the cosmetics section at your local drug store.
"Environmental Damage" or "Questionable Toning" or "PVC" [See PVC]--or one of several other letdowns from the eagerly anticipated record-breaking grade--are typical reasons. The grading service keeps the grading fee. Naturally.
Most collectors use either paper 2x2 envelopes or non-PVC "flips". If your home is very very dry (where I live it is dry like a desert), PVC flips will not cause a problem for many years, if ever.
It later developed that polyvinyl chloride (PVC) used to make these flexible envelopes leached out over a period of time and adhered to the surfaces of coins, causing bright copper coins to tone a dull hue, nickel coins to corrode, ...
Two of the most popular ways to store ancient coins are mylar (non-PVC) containers ("flips") or acid-free small paper envelopes.
For these purposes, soft, flexible flips containing polyvinylchloride (PVC) are often used, since they facilitate frequent handling.
Definition: A flip (see photo) is a small PVC, Mylar, or plastic pocket that folds in half, and is designed to hold one coin. Flips usually measure 2 inches square (when folded), but they also come in 1.5 inch and 2.5 inch sizes.
Coins with active residue, including PVC, also cannot be encapsulated but many of these coins are likely to be eligible for NGC certification after conservation.
(The plastic flips used to submit coins to PCGS are not recommended for long term storage unless they do not contain PVC. Care should be used with the PVC-free flips as they are very brittle and can damage the delicate coin surfaces).
(The plastic flips used to submit coins to PCGS are not recommended for long term storage unless they do not contain PVC. Care should be used with the PVC-free flips as they are very brittle and can damage the delicate coin surfaces).
- The market accepts minor (one or two) 'green spots' - whether PVC or verdigris - on copper coins.
- On copper coins, either the grade or the color designation may curry the favor of doubt, but not both.
More on Altered Surfaces ...
Flip
A clear, flexible plastic holder used to display and store coins. Also see: PVC.
Flip rub
Discoloration, often only slight, on the highest points of a coin caused by contact with a flip.
Just remember that coins react to certain chemicals such as sulfur present in paper and PVC from plastic it is not advisable to use such materials for long-term storage.
4. Silica Gel ...
Non destructive techniques are useful if they remove material that is on the surface without removing the original surface. Some examples are techniques that remove PVC (polyvinylchloride) from decaying soft coin flips, ...
Be careful of anything that contains Polyvinylchloride (PVC), as it is unacceptable for long-term storage needs. Humidity is another enemy. Use gloves when handling high grade coins, especially proof & presentation pieces.
The more time a coin is exposed to freely circulating air, the more tendency the coin has to change color or tone. Coin holders containing polyvinyl chloride (PVC) should be avoided for long term storage.
Cleaning of Coins ...
Wait until after I've flipped it." Flips made from polyvinyl chloride (PVC)--the most common type--will, in time, leave a cloudy residue on a coin due to breakdown in the polymer, and may reduce its value.
PVC Poly Vinyl Chloride. An ingredient of soft plastic "flip" coin holders which will damage coins over time. R# (R1-R8) Rarity scale. R1 most common; R8 least common. The often used Sheldon scale is: ...
 See also: Coin, Grade, Collector, Grading, Damage
  
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