Finding an old coin or bill can feel like stumbling onto treasure. Whether you’ve discovered a box of coins in your grandparents’ attic or picked up an unusual bill at a thrift store, the first thing that comes to mind is its potential value.
However, before you rush to show off your find, there are important steps to follow—and crucial mistakes to avoid.
Here are four things you should never do when handling valuable coins or paper money.
1. Don’t Clean the Coins
It’s tempting to make those old coins sparkle by scrubbing away dirt or tarnish, but resist the urge. Cleaning coins can damage their surface, lowering their value significantly.
A professional in the field, Donn Pearlman of the Professional Numismatists Guild, warns that abrasive cleaning can turn a coin worth $1,000 into one worth only $100. “
A scouring pad or any other harsh material is a no-go,” he says. Instead, leave cleaning to experts like the Numismatic Guaranty Company, which specializes in preserving coins without harming them.
2. Handle Coins with Care
Handling a rare coin by its face might seem harmless, but your fingerprints and natural skin oils can leave marks that degrade its condition.
Always hold coins by their edges to avoid smudging or damaging their surface. A clean, soft cloth or gloves can also help ensure you don’t inadvertently decrease their value.
3. Don’t Fold Rare Paper Bills
If you’ve found a rare piece of paper money, treat it delicately. Folding, creasing, or cramming it into your wallet can significantly diminish its worth.
Unique details like mismatched serial numbers or printing errors are often what make paper money valuable. Keeping the bill flat and intact helps preserve its rarity and appeal.
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4. Don’t Skip Professional Evaluation
When it comes to assessing the value of your coins or bills, guessing won’t cut it. Seek out a trusted coin dealer or professional numismatist who can provide an accurate evaluation. Members of the Professional Numismatists Guild (PNG) are particularly reliable, as they adhere to a strict Code of Ethics, ensuring fair practices.
Their motto, “Knowledge and Integrity,” reflects the importance of working with experts who can guide you through the process.
Editorial Note: This article was created through automated technology, with all details verified and polished by our editorial expert.