Banknotes with "solid" serial numbers have routinely sold for thousands on auction sites — if they're in excellent condition.

That $1, $5 or $10 bill in your wallet might be worth way more than its face value if it has one of these types of cool serial numbers -- even hundreds or thousands of dollars. Here’s what to look for ...

Pull any bill out of your wallet. See the dark green numbers on the top-left and top-right corners? Those are serial numbers, and some are more rare than others. If you happen to have paper money with ...

Serial numbers, paint and logos can look convincing. Golfers need to verify the seller before trusting the club. The ...

Learn how serial numbers, assay records, and refinery details protect silver bullion buyers and preserve resale value.