At her home in Moonachie, New Jersey, Quintero showed some of the coins that could have value: a few buffalo head nickels, an Eisenhower silver dollar, and at least one coin that dates back to 1887.

Coin dealers are professionals who buy and sell coins, whether they’re rare and expensive or just worth their scrap metal value. Also called professional numismatists — numismatics is the study or ...

Because of age, rare printings, or interesting features, coin collectors have shelled out serious dough for these 11 dollar coins worth a small fortune.