Just think how disappointed I was when I first learned Machine Doubling causes reduced devices..- Worthless doubling makes the original numbers smaller.
A little late, but welcome to the forum, jaelbr. You can get the most accurate analyses here if you can improve your picture quality. Some people here use magnifying glasses when they photograph.
A double die is two dies stuck together. What you are looking for is a doubled die coin. The die strikes the coin, stamping it with an impression. If the die that stamps it has a doubled impression, the coin is considered to be a doubled die coin. There are other forms of doubling on some coins, but unless it is caused by a doubled die it is worthless.
Very slight die movement during the strike can damage the devices because the machine is moving when it shouldn't. This even happens on proof coins. The example I'm showing is showing the MD on just one side. The opposite (reverse) side of the coin is totally free of machine damage. Bit on a doubled die, the die is hub with a doubled image. Making parts of the die enlarged. On a normal coin the dies are normal, but because of die movement it reduces the devices. (damaging them)
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