All About Coins
Coin identification, valuation, and collecting reference.
Popular Guides
Coin Value Checker
How to determine what your coin is worth — methods, grading, and resources.
Coin Identifier by Photo
How AI coin recognition works and how to use it for identification.
Old Coin Identifier
A guide to identifying antique and vintage coins by photo and reference.
Free Coin Identifier
Free options to identify coins online — what works and what doesn’t.
Rare Coins Worth Money
15 rare US coins you might have at home — photos, mint marks, and values.
Best Coin Identifier Apps
2026 comparison: 10 apps tested and ranked for accuracy and features.
Latest from the Blog
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How to Identify Repunched Date Errors on Coins
A repunched date shows a second date impression offset from the first. Look under 10x magnification to confirm the variety.
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How to Authenticate Russian Imperial Coins for New Collectors
Authenticating Russian imperial coins means checking weight, die detail, and edge lettering against known records. New collectors should verify rubles through PCGS or Heritage auction comps.
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How to Identify Byzantine Solidus Coins by Photo
The fastest way to identify a Byzantine solidus by photo is to read the emperor’s portrait, the reverse device, and the exergue mint letters together. These three clues place most solidi within a single reign and mint. A weight near 4.5 grams confirms a full gold coin.
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Antique Stores vs Coin Dealers vs Estate Sales: Where to Find Best Coin Prices
The best coin prices depend on the venue: dealers charge more for guaranteed authenticity, while estate sales and antique stores can hide real bargains. Always compare condition, grading, and recent auction comps before you pay.
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How to Identify Coins Found in Car Wash Vacuums and Coin Returns
Coins from car wash vacuums are usually common clad, but wheat cents and silver dimes surface often. Check dates and mint marks first.
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Bullion Coins vs Numismatic Coins: Investment Differences
Bullion coins track metal spot value, while numismatic coins carry collector premiums. Your investment goal decides which type belongs in your portfolio.
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22 Viral Reddit Coin Stories That Made Real Money
Viral Reddit coin finds have sold for six figures at auction. The rarest was a 1943 copper cent error. Real values always depend on grade and demand.
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15 Pre-Confederation Provincial Canadian Coins Worth Money
Pre-Confederation provincial Canadian coins can carry surprising collector value today. The 1858 cent and New Brunswick’s 1861 half cent lead this field.
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12 Coin Mounting and Display Mistakes That Hurt Value
The biggest coin display mistake is mounting in PVC flips, which leach acid onto metal. Poor storage can cut a coin’s value in half.
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18 Coin Damage Mistakes That Destroy Value: Tape, Brooch, Mounting and Cleaning
Coin damage destroys value faster than age ever could. Tape, brooch mounts, and harsh cleaning turn rare coins into common ones.