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Coin Errors & Varieties
Compare real specimens, then find a guide to identify the feature on your coin.
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Top 20 Most Valuable Lincoln Penny Errors & Varieties: Photos and Auction Prices
Check 20 Lincoln penny errors and die varieties by year. See what to look for in specimen photos and compare documented auction prices by grade.
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1975 Penny Errors: Photo Comparisons, Damage Checks and Auction Prices
Compare normal 1975 pennies with a genuine double strike, locate error features, avoid damage misidentification and check three documented auction sales.
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1974 Penny Errors: Wrong Planchets, Die Breaks and Damage Checks
Compare 1974 penny mint errors with normal cents: wrong planchets, die breaks, damage checks and three documented auction results.
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1955 Penny Errors & Value: Doubled Die Obverse, No Mint Mark, D and S
Compare ordinary 1955 wheat cents by mint and original color, and distinguish the major Philadelphia doubled die from machine doubling and damage.
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1965 Quarter Errors & Value: Silver Planchet Error, No Mint Mark and SMS
Check the value of a 1965 Washington quarter, understand normal no-mint-mark coins, and distinguish clad circulation issues, Special Mint Set pieces and silver errors.
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2007 George Washington Dollar Errors & Value: Missing Edge Lettering
Identify the 2007 Washington dollar, understand the 1789–1797 inscription, and distinguish normal edge lettering from a genuine mint error.
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Indian Head Penny Errors: Doubled Dies, Repunched Dates and Damage Checks
Separate Indian cent die varieties from striking errors and later damage, with a focused attribution checklist rather than unsupported rarity claims.
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2000-P Sacagawea Dollar Errors & Varieties: Cheerios and Wounded Eagle
Compare ordinary 2000-P dollars with Cheerios and Wounded Eagle varieties using real detail photos, dated values and a documented auction example.
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1943 Copper Penny Error: Authentication and Verified Auction Prices
Separate a genuine bronze mint error from copper-plated steel and altered dates. Learn what magnet, weight and auction evidence can actually establish.
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1944 Wheat Penny Errors & Value: Steel Planchet and Mint Marks
Compare 1944 wheat penny values by mint and grade. Learn how to spot a 1944-D/S and which weight and metal checks matter for a suspected 1944 steel cent.
