The value of old money can be found at sites such as OldCurrencyValues.com and AntiqueMoney.com. The condition of the money greatly affect its value. So while some rare pieces of currency may be worth thousands of dollars, in many cases older currency is not worth much more than face value.
The website OldurrencyValue.com features a very complete and exhaustive guide about characteristics to consider when selling old currencies. The site also includes an in-depth section for each individual type of currency.
AntiqueMoney.com provides value guides for many currency denominations and advice on selling old currency at auction. The site also conducts online sales and provides email consultation. Antique Money has locations in nearly 20 U.S. cities and can connect customers with representatives in most states.