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Abbreviations
Error-Variety Coin Articles
Glossary of Error-Variety Terms
Oh, No It Ain’t
Other Site Links
Questions & Answers
Top 100 RPMs

The 9 Classes of Doubled Dies

CONECA Master List  Variety Philosophy, Approach and Methodology

Errorscope 2020
Table of Contents

Errorscope 2021
Table of Contents

Errorscope 2022
Table of Contents

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