What is PVC residue?
PVC residue is a surface contaminant that may be caused by storing a coin in a soft, pliable vinyl flip. The amount of time a coin needs to reside in a vinyl flip before the PVC film develops will vary significantly, depending on temperature, humidity, the age of the flip, and the type of coin. Under optimal conditions, PVC residue can begin to form in as little as two weeks. At ANACS, we only use Mylar flips. Mylar flips are free of all PVC. The composition of a coin is a strong factor with the formation of PVC residue. A gold or platinum coin will be the most resistant, a silver coin is next, and a copper or copper-nickel coin will be the most susceptible. Copper and copper-nickel coins are also highly susceptible to corrosion and/or spotting from excessive moisture and high emperatures. Due to this, collectors need to be extra careful with their choices of storage materials for these coins. During the manufacturing process for soft vinyl flips, an agent is added to increase pliabili
PVC residue is a surface contaminant that may be caused by storing a coin in a soft, pliable vinyl flip. The amount of time a coin needs to reside in a vinyl flip before the PVC film develops will vary significantly, depending on temperature, humidity, the age of the flip, and the type of coin. Under optimal conditions, PVC residue can begin to form in as little as two weeks. At ANACS, we only use Mylar flips. Mylar flips are free of all PVC. The composition of a coin is a strong factor with the formation of PVC residue. A gold or platinum coin will be the most resistant, a silver coin is next, and a copper or copper-nickel coin will be the most susceptible. Copper and copper-nickel coins are also highly susceptible to corrosion and/or spotting from excessive moisture and high emperatures. Due to this, collectors need to be extra careful with their choices of storage materials for these coins. During the manufacturing process for soft vinyl flips, an agent is added to increase pliabili
