| These are growing more popular. Some collectors prefer to proudly display their coins in archival folders, while others prefer airtight capsules, or mylar-lined carboard. Whatever you do, don't store yours in the PVC flips you often see on the marketplace. They are made from PVC which breaks down over time and ruins the piece it was intended to preserve. If you obtain coins already in one of these, transfer it as soon as possible to something better. You may consider acetate flips, but understand that they are brittle and might scuff the piece if it is not inserted and removed with care. While they are not airtight, they're choices for moderate value coins that will be "left alone" for many years. |