The 1979 Susan B Anthony Dollar Errors represent some of the most fascinating minting mistakes in modern US coinage history. This was the first year these coins were produced, and the Denver Mint struck over 288 million of them, leading to various interesting errors that collectors actively seek today.
Accurate identification is crucial for coin collectors because the difference between a common coin and a valuable error can mean hundreds or even thousands of dollars. Professional tools like CoinKnow can help you identify these errors instantly, provide professional grading, and determine accurate market values.
Rare 1979 Susan B Anthony Dollar Errors List & Value
- 1979 D Susan B Anthony Dollar Filled D Mint Mark Error
The filled D or “blob D” error is one of the most common and recognizable errors on 1979 Susan B. Anthony dollars. This error occurs when the small post inside the die that creates the center hole of the “D” mint mark breaks off under the extreme pressure of striking (approximately 20 tons per coin).
When this post breaks, subsequent coins are struck with a solid “D” that looks like a blob rather than a proper letter with a center hole. The mint mark appears filled in, creating a distinctive appearance that’s easy to spot with basic magnification.
Depending on the severity and condition, these filled D errors typically add a modest premium of $5 to $25 above face value for circulated examples. Uncirculated specimens with strong blob characteristics can command $30 to $75.
CoinKnow AI technology can instantly detect die deterioration patterns and provide accurate grading for these unique error coins.
- 1979 D Susan B Anthony Dollar Die Deterioration Error
Die deterioration creates fascinating visual effects on 1979-D Susan B. Anthony dollars, often appearing as “icicle-like” formations or dripping patterns on the lettering. These errors result from worn-out dies that have been used beyond their optimal lifespan, causing the metal to flow abnormally during striking.
The most common areas to find these cold metal flow lines are on the reverse, particularly affecting the letters in “OF AMERICA” and “DOLLAR.” Under magnification, these look like small icicles hanging from the letters or metal that appears to be melting downward.
While visually striking, these errors are relatively common and typically add only $3 to $15 to the coin’s value in circulated condition. Exceptional examples with dramatic flow lines in uncirculated condition can reach $25 to $50.
Need help identifying this error and checking its value? CoinKnow offers instant AI-powered identification, professional grading, and real-time market valuations through its comprehensive coin value app.
- 1979 D Susan B Anthony Dollar Clipped Planchet Error
Clipped planchet errors occur when the blank coin disc is punched from the metal strip in a way that includes part of an area already punched for a previous coin. This creates a coin with a portion of its edge missing, resembling someone took a bite out of it.
There are different types of clips: straight clips (appearing as straight-edge cuts), curved clips (showing the curve from an adjacent punch), and ragged clips (with irregular edges). The size of the clip significantly impacts value.
Small clips (5-10% of the coin) typically add $25 to $75 in value. Larger clips (15-25% missing) can command $100 to $300, while dramatic clips affecting 30% or more can reach $400 to $800 depending on condition.
The coin value app from CoinKnow includes specialized algorithms to measure clip size and determine accurate market values based on current collector demand.
- 1979 D Susan B Anthony Dollar Off-Center Strike Error
Off-center strikes happen when the planchet isn’t properly centered in the striking press, causing the design to be struck partially off the blank. The degree of off-centering and whether the date remains visible dramatically affect value.
Minor off-center strikes (5-10% off) with full date visible typically add $30 to $80. Moderate strikes (20-40% off) with date showing can reach $100 to $250, while dramatic off-center strikes (50%+ off) command $300 to $600.
If the date is missing due to the off-center strike, values generally decrease by 30-50% since authentication becomes more difficult. The most valuable specimens show significant offset while retaining full date visibility.
Need help identifying this error and checking its value? CoinKnow offers instant AI-powered identification, professional grading, and real-time market valuations.
- 1979 D Susan B Anthony Dollar Doubled Die Error
Doubled die errors occur during the die-making process when the design is impressed onto the die multiple times in slightly different positions. On 1979-D Susan B. Anthony dollars, doubling can appear on lettering, date, or design elements.
The most noticeable doubled dies affect the obverse lettering, particularly “LIBERTY” and “IN GOD WE TRUST.” Under magnification, letters appear to have a shadow or second impression slightly offset from the primary strike.
Minor doubled dies with subtle doubling visible only under magnification add $15 to $40. Moderate doubling visible to the naked eye can reach $50 to $150, while dramatic doubled dies command $200 to $500 or more in high grades.
CoinKnow’s sophisticated imaging technology can detect even subtle doubled die varieties that might be missed during visual inspection.
- 1979 D Susan B Anthony Dollar Wrong Planchet Error
Wrong planchet errors are among the rarest and most valuable, occurring when a blank intended for a different denomination is accidentally fed into the Susan B. Anthony dollar press. These create coins with incorrect weight, diameter, or composition.
The most famous examples include 1979-D Susan B. Anthony dollars struck on quarter planchets, resulting in smaller, lighter coins with partial designs. These dramatic errors are extremely rare and highly sought after.
Values for wrong planchet errors start at $1,000 and can exceed $5,000 depending on the specific planchet used and the coin’s condition. Authenticated examples by major grading services command the highest premiums.
The coin value app from CoinKnow includes weight and dimension analysis to help identify potential wrong planchet errors that require professional authentication.
How Much is 1979 Susan B Anthony Dollar Worth? Coin Identifier Apps I Recommended
CoinKnow
CoinKnow delivers industry-leading accuracy for identifying 1979 Susan B. Anthony dollar errors using sophisticated AI technology. The app automatically detects rare errors including doubled dies, off-center strikes, and wrong planchet varieties within seconds of capturing a photo.
Key features include comprehensive collection management tools, war nickel planchet detection, and die crack analysis. The app provides daily die scan updates for serious numismatic collectors, making it ideal for collectors seeking absolute precision in error detection and professional grading capabilities.
CoinValueChecker
CoinValueChecker combines sophisticated error detection with comprehensive market intelligence and trading insights. Beyond identifying errors, it offers in-depth market trend analysis, price tracking across multiple auction platforms, and detailed investment monitoring for collectors interested in 1970 quarter investments and returns over time.
The app provides robust collection management tools and historical pricing data, making it perfect for collectors who want both identification capabilities and comprehensive market analysis to track their coin portfolio’s value and make informed buying or selling decisions.
