A double die coin (more accurately termed a doubled die coin ) is a coin error where the design on the coin appears doubled or overlapping.
This error occurs during the die-making process (specifically, the hubbing process), not during the actual striking of the coin.
- A die is an engraved stamp used to impress the design onto blank coin planchets.
- The die is created from a hub, which has the coin’s design on it.
- The hub presses multiple impressions into a die to create the final design.
- If the hub is misaligned between these impressions, the design can be transferred twice in slightly different positions, creating a doubled die.
- All coins struck by this faulty die will then exhibit the same doubling error.
- Doubling Clarity: Look for clear and distinct doubling of letters, numbers, and other design elements, [according to Endeavor Metals] . It should not look like a smear or flattening, but like a distinct, separate image.
- Notching: On some doubled dies, you might observe notches or split serifs on the letters.
- Location: Doubling can appear on the obverse (front) or reverse (back) of the coin, [says APMEX] . It’s more common on the date, mintmark, and inscriptions.
- Magnitude of Doubling: Doubling can range from very subtle to dramatic and easily visible with the naked eye.
Don’t confuse a doubled die coin with machine doubling (also called ejection doubling or strike doubling), according to Daves Collectible Coins.
- Machine Doubling occurs when the die shifts or bounces slightly during the striking process itself.
- It creates a “smeared” or “shelf-like” doubling effect, and the doubled elements are typically lower than the primary image.
- Doubled dies on the other hand, have clear, raised doubling of the design elements, with both images appearing at roughly the same height.
Doubled die coins are generally more valuable than standard coins, especially if the doubling is pronounced and rare. Some particularly famous examples, like the 1955 Lincoln cent doubled die, can fetch thousands or even hundreds of thousands of dollars. However, the value ultimately depends on factors like the rarity of the particular error, the clarity of the doubling, and the coin’s overall condition. You can also find some examples listed for sale online.
What does a double die coin do?
I can help with that. Doubled die (also known as hub doubling) is a term in numismatics used to refer to a duplication of design elements on a working die created due to a misalignment of the die or hub during the hubbing process. Strength of the doubling can vary from very slight and isolated to extreme and widespread.
Are double die quarters worth anything?
Some coins show doubling on the inscriptions or design elements on the reverse side. These quarters can be worth between $50 and $150, depending on the prominence of the doubling and the coin’s condition. A die crack appearing on the reverse side creates unique patterns.