ERROR COINS Coins: Catalog, Photos, History

Greetings from Ukraine!

Welcome to DEMA-COINS.COM, a unique numismatic project focused on the diversity of coin denominations.

I have been a world coin collector since 1993. After years of exploring different local topics, and a "one coin from every country" collection (2400+ coins from 290 issuers), I shifted my focus to a more specialized goal: collecting by denomination name.

The Mission: My collection currently features 500+ unique coin names, and my goal is to document at least one specimen for every denomination ever minted — an estimated 1000+ historical names.

Are you a like-minded collector? I am looking for fellow numismatists who share this "one coin of every name" interest. If you have a similar focus, let’s connect! I’d be glad to share experiences and knowledge.

Find out more about this project in the ABOUT section.

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DEMA COINS: numismatic catalog by names (500+)

ERROR COINS Coins

Error coins: mint-made errors (phenomenon in numismatic)

DENOMINATION GUIDE