The machine has not rules to follow. One area to flatten, one area to push aside. What very the loose die restrainers allow, will happen. This is not always the same. It can vary from strike to strike:
Note on these coins I found in a few rolls.
Note they all have the same marker on them, meaning, 'They were all struck from the same die pair." But note there were examples of different strikes of
Machine Doubling. What ever way the machine would twist and turn, the strike was not the same. What was the same was the markers, as they are on the dies. So when a doubled die happens, it is not the strike that cause the coins to be struck a doubled die, but the die is doubled. It strikes doubled dies, from a doubled die.
Machine Doubling can even alter a doubled die, as MD is from the machine. And can alter a doubled die, as easy as
Machine Doubling alters a normal die. So when we want to find MD? Where do we look? On the outsides of the devices. On a doubled die, the devices are enlarged in the centers of the devices. So what would a doubled die, affected by MD look like?
Notice on the 4 coins, that are all the same
DDO. Not all of them are showing hub doubling in the centers of the devices, but not on the mintmark. But not the yellow arrows? That is the areas where the MD altered a doubled die. All of the
DDO is present, the interrupted areas were all caused by the
Machine Doubling. Note all the
Machine Doubling is in a single direction. But again note, not all of the MD is the same. It can vary. It follows no rules, it reacts as the loose machine allows it to cause the damage, because of the loose machine, the die movement after the strike, does what is allowed by the machine.
So with this coin. The strike was controlled. The recoil of the machine is random and creates the damage, many think is a doubled die, but is coin damage to the outside edges of devices after the strike. That is what you are seeing. Knowing where to find
Machine Doubling, will keep you not falling for the damaging affect on devices. Look at the centers of the devices, not on the outside edges. MD is a flattening of the devices. Distorting, what was struck. Altering them whatever way the machine allows this to happen. On a doubled die, they are all formed the same, except when MD alters them after the strike. This is a subject that a lot of new ones have a hard time to leave behind. When you look at coin, look to see the size of the devices. Pretty soon, your eyes will note size. If they are not enlarged, move on to the next coin. When a new one looks at a coin, he is not looking for the spread on the devices, but is looking for something different on them. Well guess where he finds it? Not on the center, but on the outside edges of the devices. Look for the spread on devices. I like using the side by sides as it shows with out your eyes moving one location to another, what the differences are on a strike of the dies on a coin. Hope this helps.
Note on the normal coin image and not the Machine Doubling? Did you spot it? Note how it reduces the size of the devices, is flat and on the outside of the devices. Typical Machine Doubling seen on a normal coin.
CoopHome :
Can you tell the difference between Machine Doubling and a doubled die, with Machine Doubling. Here is how to tell.
Posted 03/28/2021 5:02 pm
