Posts Tagged ‘die doubling’

Here’s a unique diagram to help coin collectors identify true double die mint errors. As you can see, machine doubling is a shift of the die during the strike, and squashes the metal away from the L, while the doubled L is actually struck with a die that was engraved with a double L. There’s many forms of machine doubling, and this is cause for much confusion, but a machine doubled coin is not even closely related to a true doubled die. The most common misidentification of a doubled die is the poor man’s doubled die, but it’s not caused by a doubled die at all, but by an abraded die.