I bought silver coins recently and some of the plastic slips they came in are not air tight. I am afraid that they may tarnish over time and their value will be affected negatively. Currently they are in nearly perfect uncirculated condition.
If the value of the coins would be harmed from tarnish I would like to preserve them with some type of casing or other product that would protect them. Thanks in advance!
When you purchase coins, most of the time the package you receive them in is not meant for long term storage, it is the most convenient/cheapest way for the dealer. Absolutely move them to a better environment, preferably PVC free.
While toning and patina CAN add value to a coin, it is pretty rare that it does. Most collectors like their coins as bright as possible, (without being cleaned), and will pay a premium for that. Most toning and patina that adds value to a coin is for ancient coins, which have all been cleaned, and an attractive hard green patina will add value to.
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sometimes .it is called a patina………….then it is good………
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i’d leave them exactly in your plastic slips unless the plastic itself is unstable. i use archivally safe plastic coin flips even for my numismatically significant coins.
the more important thing is to handle them as little as possible or not at all. over time some coins will develop very attractive and often colorful "toning", which can and often does *add* to the value of your coins.
so, unless your containers are themselves unstable, leave your coins alone!
References :
When you purchase coins, most of the time the package you receive them in is not meant for long term storage, it is the most convenient/cheapest way for the dealer. Absolutely move them to a better environment, preferably PVC free.
While toning and patina CAN add value to a coin, it is pretty rare that it does. Most collectors like their coins as bright as possible, (without being cleaned), and will pay a premium for that. Most toning and patina that adds value to a coin is for ancient coins, which have all been cleaned, and an attractive hard green patina will add value to.
References :
30+ years coin collector, ancient coin collector