A double die coin is one that was struck twice by mistake. When you look at the coin, you see a double image, two of everything. Usually the second image is very faint.
There are two types of a "double die" errors.MACHINE DOUBLE: The cause of this is a loose die in the press that struck the coin and is very common.HUB DOUBLE: This is caused from a mistake in the manufacturing of the die used to strike the coin.
Not if it is a modern coin. Modern coin minting equipment has the obverse (heads) and the reverse (Tails) dies "keyed" meaning that you can't insert an obverse die where the reverse die goes and vice versa. Because of it, it is impossible to have what most people think of a double headed coin. It is however possible to have what is known as a "Brockage" error where a coin gets stuck to the die and then the coin acts as a die for the next coin. This would mean that a coin could have 2 heads, but one side would be a reverse image of the other side.
We might call a doubled die coin "double struck" because it was "minted" twice with the same die. This results in a minting error. A date or part of the design can be "repeated" on a coin thus minted. A coin that escapes the quality control screening and makes it out into circulation can be worth some bucks. A link is provided to the Wikipedia article, below. If a coin is a double die as a result of the die itself having an inconsistency it is worth far more than a coin that was simply struck twice.
Im going to the coin show to find out. I have a 1969 d reverse double die penny. the doubling is amazing 60-70% of the back
What do you mean "double faced" you mean like a doubled die error? Or do you mean it has heads on both sides? If it has heads on both sides it is not a mint product but rather a "magician's coin" and is privately made and pretty much worthless. If it is a doubled die error, please provide the year and mint-mark of the coin so we can better identify if it is a known error and how much it is worth.
I double die obverse is when the letters or numbers on the coin such as "In God We Trust" or the year are slightly overlapped (like writing on top of the same word twice). You can tell a double die obverse by looking at the words on the coin.
I'm not sure what you mean but there are some possibilities. If there is a face on the back and on the front then it is a fake and is worth nothing. It however may be a double die. A double die is when a coin is stamped twice. If you do indeed have a double die the best thing to do is take it to a collector and have he or she examine the coin and tell you what its worth.
There are two types of a "double die" errors.MACHINE DOUBLE: The cause of this is a loose die in the press that struck the coin and is very common.HUB DOUBLE: This is caused from a mistake in the manufacturing of the die used to strike the coin.
Look at it under a lens. If you are still not sure then take it to a coin dealer and have them look at it.
Double die what? Please post a new question with the coin's denomination and country of origin.
Mint error coin that has become famous in coin collection circles.
You tell me?
Not if it is a modern coin. Modern coin minting equipment has the obverse (heads) and the reverse (Tails) dies "keyed" meaning that you can't insert an obverse die where the reverse die goes and vice versa. Because of it, it is impossible to have what most people think of a double headed coin. It is however possible to have what is known as a "Brockage" error where a coin gets stuck to the die and then the coin acts as a die for the next coin. This would mean that a coin could have 2 heads, but one side would be a reverse image of the other side.
We might call a doubled die coin "double struck" because it was "minted" twice with the same die. This results in a minting error. A date or part of the design can be "repeated" on a coin thus minted. A coin that escapes the quality control screening and makes it out into circulation can be worth some bucks. A link is provided to the Wikipedia article, below. If a coin is a double die as a result of the die itself having an inconsistency it is worth far more than a coin that was simply struck twice.
This is an error coin. The "Double Hump" is likely caused by a die-brake. Examples of this coin are currently selling on EBAY for $10.00-$12.00.
We might call a doubled die coin "double struck" because it was "minted" twice with the same die. This results in a minting error. A date or part of the design can be "repeated" on a coin thus minted. A coin that escapes the quality control screening and makes it out into circulation can be worth some bucks. A link is provided to the Wikipedia article, below. If a coin is a double die as a result of the die itself having an inconsistency it is worth far more than a coin that was simply struck twice.
About $15. Certified graded coin have a higher value.