NEW YORK — Is it a dime? Or is it a nail? In probably one of the oddest items to come to the world of coin collecting, New York-based Heritage Auctions has announced the sale of a Roosevelt dime that ...

Wrong planchet errors represent some of the most dramatic minting mistakes possible. Wrong planchet and off-metal errors occur when a correctly made blank from one denomination is accidentaly fed into ...

Some of the rarest and most valuable coins in U.S. history owe their worth to minting errors that slipped through unnoticed. Coins like the 1943 Copper Penny, struck in copper instead of wartime steel ...

Add Yahoo as a preferred source to see more of our stories on Google. Peter Gudella via Shutterstock Minting coins isn't exactly an exact science. Even though most ...

As with just about any asset, a coin’s value is determined by its market demand. This means that coins in short supply often see higher demand — and higher values. With coins, supplies are limited ...

I always advise checking any Sacagawea dollars from 2000 carefully. Even though millions were made, only a few have this unique design mix, making it a valuable find for collectors. 1974 Aluminum ...