This is not the classic
Machine Doubling, but it called push doubling.
The differences? Classic
Machine Doubling alters the device. Push doubling enlarges the device, but is the similar to the classic.
In what way? Both are the same cause. It is from strong swing movement of the die setup. A doubled die has the doubling on the die.
Machine Doubling is caused by the machine. But
Machine Doubling can also happen to a doubled die because the machine alters the strike, not the die.
1969-S DDO-001: (
Note yellow arrows)
Most variety collectors prefer not to have
Machine Doubling on their doubled dies. So they steer away from the examples with MD. But if you are having a coin graded, they third party graders consider MD as part of the normal strike. So if you have a MD example you think is a doubled die and submit it, it will come back as a normal coin. But if you submit a odoubled that that has
Machine Doubling on them, then it gets graded as a doubled die with no notation of the
Machine Doubling. It is the buyers who don't want an example, that will pass on these. (some don't mind though)
To me? Pass! (I guess I'm a variety purist)
Posted 02/07/2020 8:20 pm
