The stories

Everything a collector should know.

What a coin is worth, what to look for, what to avoid — and the stories behind the coins collectors chase.

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Welcome to the Coinzy blog. Identification guides, value insights, expert Q&As, rare coin stories, and everything else you need to know about your collection.

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Errors & varietiesUS

How to Evaluate an Error Coin Listing

Learn about reviewing an error-coin advertisement: check the evidence, avoid common mistakes and keep clear records for a clearer collecting decision.

Oct 18, 2026

Errors & varietiesUS

Double Strike vs Doubled Die: A Collector’s Guide

Learn about distinguishing a double strike from a doubled die: understand the evidence and plan your next steps before deciding what to buy, sell or keep.

Oct 17, 2026

Errors & varietiesUS

How to Investigate a Possible Wrong-Metal Coin

Learn about researching a possible wrong-metal coin: check the evidence, avoid common mistakes and keep clear records for a clearer collecting decision.

Oct 16, 2026

Errors & varietiesUS

Coin Die Crack or Scratch: What to Examine

Learn about examining a line on a coin: check identification, understand the evidence and keep practical research notes for a clearer collecting decision.

Oct 15, 2026

Errors & varietiesUS

How to Photograph a Suspected Coin Error

Learn about photographing a suspected mint error: check the evidence, avoid common mistakes and keep clear records with practical steps for collectors.

Oct 14, 2026

Errors & varietiesUS

Broadstrike vs Off-Center: What Is Different?

Learn about comparing broadstrikes with off-center strikes: understand the evidence and plan your next steps before deciding what to buy, sell or keep.

Oct 13, 2026

Errors & varietiesUS

What Is a Coin Die Variety?

Learn about understanding a coin die variety: check the evidence, avoid common mistakes and keep clear records before deciding what to buy, sell or keep.

Oct 12, 2026

Errors & varietiesUS

Mint Error or Damage: How to Check a Coin

Learn about distinguishing a mint error from later damage: compare evidence, understand the risks and keep useful records when researching your collection.

Oct 11, 2026

Errors & varietiesUS

What Is a Clipped Planchet Coin Error?

Learn about evaluating an apparent clipped planchet: check the evidence, avoid common mistakes and keep clear records for a clearer collecting decision.

Oct 10, 2026

Errors & varietiesUS

How to Examine an Off-Center Coin Strike

Learn about examining an apparent off-center strike: check the evidence, avoid common mistakes and keep clear records for a clearer collecting decision.

Oct 9, 2026

Errors & varietiesUS

Doubled Die vs Machine Doubling: How to Compare

Learn about distinguishing a doubled die from machine doubling: understand the evidence and plan your next steps before deciding what to buy, sell or keep.

Oct 8, 2026