A friend recently gifted me an old box filled with coins from different countries, and I have no idea what they’re worth. Some of them look really interesting—like an old Japanese yen from the 1800s and a few silver coins from Europe. I checked eBay and saw prices all over the place, with some listings asking hundreds of dollars and others selling similar-looking coins for a few bucks. Where’s the best place to get accurate and realistic price estimates for foreign coins? I’d rather not get scammed by overpaying or selling too cheap.