General question about Washington quarter MD question

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Jakeballzack
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General question about Washington quarter MD question

#1 Unread post by Jakeballzack »

Just a general question about MD coins ....are they a sigular event meaning one strike is MD only or are a few identical coins minted before it "returns to normal"?
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Re: General question about Washington quarter MD question

#2 Unread post by Jakeballzack »

Some pic of 1986 s proof coin..my question is I have another 1986 s proof quarter with the exact same doubling ..
So I want to see what anybody thinks
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Jakeballzack
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Re: General question about Washington quarter MD question

#3 Unread post by Jakeballzack »

So automatically with any doubling I'm going to have to assume md.. I found this coin sealed in a set....ok great ...
Thru several more that were "normal" then another coin with the exact same doubling so any thoughts about my question?


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Re: General question about Washington quarter MD question

#4 Unread post by Paul »

I recommend reviewing the minting process, noting the differences between proof and business strike coinage. :ugeek:
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Jakeballzack
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Re: General question about Washington quarter MD question

#5 Unread post by Jakeballzack »

I guess I can't articulate my question properly. I've reviewed the process and trying to ask about the process..thank you all anyway.
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Re: General question about Washington quarter MD question

#6 Unread post by Paul »

I don't know what you mean by "Returns to Normal"................. :whistle:
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Re: General question about Washington quarter MD question

#7 Unread post by JTCC »

Here’s my explanation to machine doubling. Machine doubling is a issue caused on a coin by loose mechanical parts in the striking press, once the part became loose, all future coins the machine strikes would likely have the same issue until the loose part was fixed.
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Re: General question about Washington quarter MD question

#8 Unread post by Paul »

"Machine Doubling", in my opinion, should be used as a 'generalized description',… indicating that what you are seeing is not "True Die Doubling"…
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Re: General question about Washington quarter MD question

#9 Unread post by Daniel »

JTCC wrote: ↑Mon Jun 27, 2022 1:03 pm Here’s my explanation to machine doubling. Machine doubling is a issue caused on a coin by loose mechanical parts in the striking press, once the part became loose, all future coins the machine strikes would likely have the same issue until the loose part was fixed.
In essence this is correct. Once this is corrected the MS stops.
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Re: General question about Washington quarter MD question

#10 Unread post by Earle42 »

Just an added note though - not all coins from that same press with the loose die will necessarily have to have identical machine doubling on the same devices.
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Re: General question about Washington quarter MD question

#11 Unread post by Jakeballzack »

In studying to proof coin process with multiple strikes wouldn't that rule out machine doubling as any thing loose would blur out lettering?
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Re: General question about Washington quarter MD question

#12 Unread post by Earle42 »

I do not think the physics involved is that easy to make generalizations about what would or would not happen with MD in double striking a proof.. If the dies are loose, the actions are randomized. It may even be possible to get a perfect strike, though probably unlikely.
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Re: General question about Washington quarter MD question

#13 Unread post by Daniel »

It's either a doubled die or it isn't. Doubled dies don't look like MD.
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