Here is their description of the site: "Error-ref.com is a comprehensive illustrated glossary of every conceivable defect associated with the minting process.

Error coins have a unique ability to excite collectors and non collectors alike, as well as provide insight into the minting process.

Welcome to the world's first search engine for minting errors. This platform is based on a server that allows for infinite storage of coins and the secure ...

Error-ref.com is a comprehensive illustrated glossary of every conceivable defect associated with the minting process. It will contain detailed illustrated ...

We are a Veteran owned home business who serves the community with educational numismatic materials. We focus on educational numismatic material.

Welcome to the CONECA Axtarish Site! CONECA (pronounced: CŌ´NECA) is a national numismatic organization devoted to the education of error and variety coin collectors ...

We buy and sell major mint error coins, and offer hundreds of errors on our website, www.sullivannumismatics.com. We are also a member of CONECA, ANA, and ...

An error coin is a coin that was manufactured incorrectly by a mint. Many times called mint errors, error coins come in scores of "shapes, sizes and types.

As this site develops I intend to list coin varieties and errors. For now, the focus is on Major Die Breaks (also known as "cuds") as there has not been any ...

Buying and selling major mint error coins with superior eye appeal for over 20 years. We carry different types of unique and rare certified error coins.