The 1990 penny error coins represent some of the most exciting finds for modern coin collectors. This year marked a significant transition in U.S. Mint production ...

While most coins from the 1990s are still worth face value, certain rare examples from that decade have become numismatic goldmines. The key lies in knowing what to look for among your old pocket ...

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 ...