How to store and insure coins
Coins are durable, but their surfaces are not. Most damage to collections comes from the wrong holders, damp air and well-meaning handling, and most losses come from storage that was never insured properly. This guide covers both halves of the job.
By Changes Hands Research · Updated Nov 3, 2026 · 4 min read
What actually damages coins
Moisture is the main enemy. Humid air speeds up toning on silver and spotting and corrosion on copper, and a coin stored in a damp basement can change visibly within a few years. Sulfur compounds in the air, in some papers, cardboard, rubber bands and wool, darken silver and copper. Chlorine and salt, from swimming pools or coastal air, cause pitting.
Then there is plastic. Soft, flexible coin flips made with PVC break down over time and leave a green, sticky film that eventually etches the surface. Fingers do damage too: the oils and salts on skin leave prints that can become permanent, especially on copper and on proof surfaces.
Finally, people. Cleaning, polishing and dipping cause more lost value than any storage condition. Never clean a coin you plan to keep or sell.
Choosing holders
The right holder depends on the coin's value and how often you want to look at it.
- Certified slabs: PCGS and NGC holders are sealed and made of inert plastic. They are the best protection available for valuable coins. Store them upright in slab boxes so the plastic does not scratch.
- Archival flips: rigid flips made of Mylar or other PVC-free plastic are fine for raw coins. Avoid soft, oily-feeling flips, which usually contain PVC.
- Cardboard two-by-two holders: inexpensive and widely used. Staple them carefully so the staples never touch the coin, and flatten the staple legs so they do not scratch neighbors.
- Albums and folders: good for viewing sets, but older cardboard albums can contain sulfur and tone coins over decades. Some collectors want that toning; others do not.
- Tubes: inert plastic tubes are the standard for bulk silver and bullion coins. Fill them so coins cannot rattle.
Controlling the environment
Aim for a cool, dry, stable place. Avoid attics, basements, garages and exterior walls, where temperature and humidity swing. Put silica gel desiccant packs in the safe or storage box and replace or recharge them regularly; an inexpensive hygrometer will tell you whether they are working. Keep coins away from household cleaners, paint, new carpeting and anything else that gives off fumes. Wooden cabinets can release acidic vapors, so line them or use sealed boxes.
Handling
Hold coins by the edge, between thumb and forefinger, over a soft surface such as a folded towel. Nitrile gloves help but are no substitute for edge handling. Do not talk or breathe directly over an uncirculated or proof coin; small droplets can leave spots that appear months later. Take coins out of their holders as rarely as possible.
Where to keep them: home, bank or vault
Each option has trade-offs in cost, access and risk.
- Home safe: convenient and private, but only as good as its rating and how it is anchored. A safe also tells a burglar where to look. Keep it out of sight and do not discuss your collection publicly.
- Bank safe deposit box: secure against burglary and inexpensive, but access is limited to banking hours, humidity inside vaults can be high, and the contents are not insured by the FDIC or, in most cases, by the bank.
- Professional vault custody: purpose-built storage with insurance, audit trails and climate control, usually through a dealer, depository or exchange. You give up easy physical access in exchange for security.
Insuring a collection
Do not assume your homeowner's or renter's policy covers your coins. Most standard policies cap coverage for coins, currency and precious metals at a low limit, and some exclude certain kinds of loss altogether. Read your policy's special limits section.
There are two common ways to fill the gap. You can schedule the collection on a rider to your existing policy, usually with an itemized list and appraisal, or you can buy a dedicated collectibles policy from an insurer that specializes in collections. Specialist policies tend to understand coins better, may cover items in transit or at shows, and often require that you keep an inventory. Ask how a claim would be valued: replacement value, agreed value or something else.
Keep a proper inventory
An insurer, an heir or a police officer will all need to know what you owned. For each coin record the date, mint, grade, grading service and certificate number if slabbed, what you paid and when, and keep clear photos of both sides. Store a copy away from the collection itself, for example in encrypted cloud storage. Update it when you buy or sell. A good inventory also makes it much easier for your family to sell the collection well if they ever have to.
Letting someone else do it
For coins you want to trade rather than hold in hand, vaulted custody removes most of these chores. On Changes Hands each coin is sealed in an inert holder or kept in its slab, logged by certificate or grade report number, photographed and held in an insured, access-controlled vault. You keep title; Changes Hands holds the coin as custodian, and the reserves page lists every vaulted coin by class. There is no storage fee at launch, and you can have coins shipped home at any time for $35 per shipment plus $3 per coin, with insurance added above a declared-value threshold. Vaulted custody explained covers the details.
Frequently asked questions
What is the best way to store coins at home?
Use inert holders (slabs, PVC-free flips or tubes), keep them in a cool, dry and stable place such as a quality safe away from exterior walls, add silica gel to control humidity, and handle coins only by the edges.
Are PVC coin flips bad?
Yes, for long-term storage. Soft PVC flips break down and leave a green, sticky residue that can permanently etch a coin. Use rigid Mylar or other PVC-free flips instead.
Does homeowners insurance cover coin collections?
Usually only up to a low special limit for coins and currency. To cover a collection properly you generally need a scheduled rider or a separate collectibles policy. Check your own policy's limits.
Is a bank safe deposit box insured?
The contents of a safe deposit box are not covered by FDIC insurance, and banks generally do not insure them either. If you keep coins in a box, insure them through your own policy.