| These are growing more popular. Some investors opt to proudly showcase their coins in archival folders, while others like airtight capsules, or mylar-lined carboard. Whatever you do, don't store yours in the soft flips you often find on the marketplace. They are made from polyvinyl chloride which decomposes in time and ruins the coin it was intended to preserve. If you buy coins already within one of these, transfer it as soon as possible to something better. You may consider Mylar, but recognize that these are hard and may scratch the piece if isn't placed and taken out carefully. Although they are not airtight, they are alternatives for moderate value coins that will be "left alone" for numerous a long time. |