I know there are double die's and machine doubles etc... But has anyone run across a triple strike? Would this be considered a mechanical strike or a triple die strike? I am still unsure about DD vs. Mech Die strike. Logically if the machine/die strikes a coin more than once its a....?
This penny is from one of my 1955 Proof Sets. There is a negative pic that may make it easier to see the tripling.
The business strike cents are only struck one. The Machine Doubling damaged them after the strike. Note a doubled die. Just machine movement after the strike.
Proof coins are struck twice. They can alter the devices after these strikes. Leave what is call flat field doubling:
That pic is from the sellers site. I am waiting for my stereo microscope to come in and if it doesn't arrive in the next day or two I will try my cell phone.
Single strike. Two direction movement of the die after the strike. Machine caused the damage to these devices. A little bit of push doubling: While this type of MD does enlarge the devices a bit, they are not hub doubled. They are pushed aside by the dies after the strike.
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