After returning from a trip to the Eurozone -- an 18-nation union of countries using the euro as common currency -- you'll undoubtedly find your pockets filled with coins that aren't useable in the United States. While banks and exchange houses typically accept euro bills, they don't normally accept coins. To unload your coins, you'll need to sell them.
Selling Euro Coins
If you know someone traveling to Europe, the easiest option is to sell your coins directly to that person. If you don't know someone personally, find a traveler via an online classified ad service to buy your coins. Alternatively, sell your coins to currency dealers such as European Coin Exchange and Leftover Currency. To use these services, fill out a form and mail it in with your coins. You'll receive a payment electronically or by check.