With the DDR not pictured, as there may be one or many types, and the higher probability it is MD, I am going to say one cent.
How do we know it is really doubled? Can you take a better picture and one of the reverse please? I wouldn't put a price on it unless it is truly doubled die.
Better definition: Machine double happens at the mint but not as a result of the die hitting the coin twice but another issue.
If it is MD then it's worth one cent but we can't tell unless we see pictures. Try holding up a strong magnifying glass to your camera lens then taking a picture. That sometimes works.
Wrong again. What you are describing is a double-struck coin (i.e., a coin that was struck twice by the dies). The OP thinks he has a doubled die which is a coin that is struck by a die that has doubling on the die. Machine doubling (aka, strike doubling) is damage that may look like doubling and is caused by movement of a die (usually the hammer die) when it retracts just after striking the coin.
although the image is blurry it appears to be a large date zinc. The 82 DDR is on the small date zinc. The reverse would look like my avatar if it were the real doubled die. Richard
I don't think you quite grasp the point I was trying to make. What you are calling "double striking" is not the same as a doubled die. Double striking is when a coin is struck twice by the dies. A doubled die coin is a coin that was struck once (twice or more for a Proof coin) by a die that has doubling.