This looks more like strike doubling in the date than mechanical doubling. What is your opinion?:goofer:
I don't agree. Look on the inside of the 4 that is a straight line parallel to the main 4. Look on the inside of the 8. The bright lines are exactly circular like the main 8. But you may be right about some plate bubbling. It almost looks like the 8 and 4 are tripple strikes. There is a partial at on the left top outside of the main 8 and then there is another part of an 8 on the inside of the main 8. I attached my drawings on the images.
Can you explain the difference between "strike doubling" and "mechanical doubling"? "Mechanical doubling" (aka "machine doubling") is just another term for "strike doubling" in my book.
I thought strike doubling is when the coin is struck more than once. Mechanical doubling is worthless.
Back to plate doubling. Could this be the electrical plate doubling. I can't remember the name of it, but there some kind of electrical charge on the coin that causes this mirror image on the planchet. Electroplate doubling or something like that.
I think you mean "doubled die", not "srike doubling". Also, I've never heard of "electroplate doubling" before. Then again, I'm no expert but it sounds to me like that name was just pulled out of a hat.
Strike doubling and double strike are two different animals. Strike doubling occurs when the hammer die "chatters" immediately after striking the coin which shears off a portion of the just-struck raised designs. A double strike occurs when the dies strike a coin twice. A doubled die is a die that has been doubled during the hubbing process. Every die struck by the doubled die will have doubling.
This looks more like a double strike or triple strike but it even more looks like electroplate doubling. I learned of electroplate doubling or whatever it is called from a coin expert on Coin Community Forums.
It's either machine doubling, die deterioration doubling, or a combination of the two. Machine doubling is the same thing as strike doubling, mechanical doubling, machine damage doubling, machine doubling damage, shift doubling, ejection doubling, and however many other synonyms are circulating in the hobby. A double strike is not strike doubling. A double strike involves two downstrokes of the hammer die while machine doubling involves one.
