Coin identification library
Coin Identification Guides
Guide section
Identification basics
Start here when you have an unknown coin or want a better photo and a more reliable first result.
3 articles
How to Identify a Coin by Photo
Follow a practical process from a clear photo to visible clues, a possible match, and a careful catalog check.
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How to Photograph Coins
Learn how light, focus, background, angle, and both sides of the coin affect identification.
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Foreign Coin Identification
Read visible text, portraits, coats of arms, dates, and denominations on unfamiliar coins.
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Guide section
Coin types
Use a focused guide for the writing system, portraits, symbols, and historical clues on your coin.
19 articles
US Coin Identifier
Identify American coins by denomination, design, date, mint mark, edge, measurements, composition, and condition.
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US Penny Catalog
Browse detailed Lincoln cent pages by year, reverse design, mint mark, metal, weight, condition, and important warning signs.
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Euro Coin Identifier
Identify euro coins by denomination, common and national sides, country, year, edge, measurements, and commemorative design.
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British Coin Identifier
Identify UK coins by denomination, monarch portrait, reverse design, year, shape, edge, measurements, and commemorative issue.
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Canadian Coin Identifier
Identify Canadian coins by denomination, monarch portrait, reverse animal, year, shape, edge, measurements, and commemorative issue.
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Australian Coin Identifier
Identify Australian coins by denomination, native animal, monarch portrait, year, shape, edge, measurements, and commemorative issue.
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Japanese Coin Identifier
Identify Japanese coins by denomination characters, holes, era year, familiar motifs, measurements, and commemorative design.
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Korean Coin Identifier
Identify South Korean won coins by Hangul, national motifs, year, denomination, edge, measurements, and commemorative design.
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Spanish Coin Identifier
Identify Spanish euro and peseta coins by currency family, national design, date, denomination, edge, and condition.
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French Coin Identifier
Identify French euro and franc coins by currency family, national symbols, date, denomination, edge, and condition.
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German Coin Identifier
Identify German euro and mark coins by national designs, mint letters, dates, denomination, edge, and condition.
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Old Coin Identifier
Identify old coins by date, portrait, inscriptions, mint marks, measurements, surface, authenticity, and condition.
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Hammered Coin Identification
Identify hand-struck coins by flan shape, portraits, legends, mint marks, edges, strike, authenticity, and condition.
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Ancient Coin Identifier
Check the evidence that matters when a coin is old, worn, historically styled, or possibly a reproduction.
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Roman Coin Identification
Use portraits, Latin legends, reverse symbols, mint marks, metal, size, and weight to research Roman coins.
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Greek Coin Identification
Compare Greek lettering, symbols, portraits, city marks, and historical types with focused examples.
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Chinese Coin Identification
Use shape, script, metal, inscriptions, and period clues to narrow down Chinese coin types.
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Arabic Coin Identification
Understand how Arabic inscriptions, dates, calligraphy, and symbols help identify a coin.
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Common US Coins and Their Values
Check denomination, date, mint mark, silver content, condition, and common US varieties.
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Guide section
Value & condition
Learn what affects a price range and how to compare condition with real market evidence.
5 articles
How to Estimate Coin Value
Understand condition, rarity, mint marks, metal, demand, and why completed sales matter.
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Coin Value Methodology
See how an estimated range should be interpreted and which evidence can narrow it.
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Rare Coin Identifier
Check dates, mint marks, varieties, condition, and demand before calling a coin rare.
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Silver Coin Identification
Research possible silver coins using visible details, weight, diameter, and date ranges.
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Gold Coin Identification
Review gold coin clues and learn why metal testing and authentication matter before selling.
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Guide section
Errors & authenticity
Check whether an unusual mark could be a mint error, post-mint damage, or a coin that needs expert review.
1 articles
Rare Coin Errors Beginners Should Know