Coin storage

[1] To prevent theft coin collectors use safes and bank safety deposit boxes.

Each type of storage solves some of the challenges of safely storing a coin collection, but few completely solve all of them alone and thus, many collectors use multiple layers of protection to improve the safety of their coins.

[2] The more valuable the coin the more elaborate the storage solutions and sizable the collection.

Soft PVC[1] and cardboard contain sulfur and other acidic or oxidizing materials.

For expensive coins that can be tarnished, collectors should avoid using cardboard folders, paper or plastic bags, certain plastic tubes, and any other storage container that is not chemically inert.