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
-
How to Use a Coin Identifier App on iPhone: Step-by-Step Beginner Guide
Identify a coin on iPhone by photographing both sides in bright light. A good app suggests a match in seconds. Always verify before trusting the value.
-
Coin Slabs vs Raw Coins: Which to Buy in 2026
Slabbed coins guarantee grade and authenticity for serious buyers. Raw coins cost less but demand real expertise before you pay.
-
Indian Mughal Coin Identification for Collectors
Mughal coins are identified by Persian inscriptions, mint name, and Hijri date. Gold mohurs and silver rupees carry the emperor’s name in calligraphy.
-
How to Tell the Difference Between Sterling and Coin Silver
Sterling silver is 92.5 percent pure while US coin silver runs 90 percent. The 2.5-point gap shows up in hallmarks, weight, density, and patina.
-
20 Most Valuable Eisenhower Dollars Ever Sold
The most valuable Eisenhower dollar ever sold is the 1976-S Silver Bicentennial PR70 at $7,000+. The 1972 Type 2 trails just behind in record books.
-
How to Identify a 1942 Over 1 Mercury Dime Overdate Error
The 1942/1 Mercury Dime is a true overdate variety from Philadelphia. Look for the curved underdigit base inside the 2 to confirm authenticity.
-
18 Mint Error Coins You Could Find in Pocket Change: Overstrike, DDO and Off-Stamp
The 1955 DDO cent, 1969-S DDO cent, and 2004-D Wisconsin extra-leaf quarter still surface in pocket change. Most cashiers and roll hunters miss them daily.
-
How to Tell if a Coin is Silver: 4 At-Home Tests That Work
The quickest silver test is the ice cube method, because silver conducts heat faster than any other coin metal. Pre-1965 US dimes contain 90 percent silver.
-
30 Most Valuable Commemorative Coins You Might Own
The most valuable U.S. commemoratives include 1915-S Panama-Pacific gold and the 1900 Lafayette Dollar. Auction prices reach $200,000 in top grades.
-
Heritage Auctions vs Stack’s Bowers: Where to Sell Rare Coins
Heritage Auctions delivers higher volume with stronger online reach. Stack’s Bowers commands premium results for true rarities and pre-1850 material.