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What Is Relationship Btwn "Notching" And "Double Die"

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basicbob101's Avatar
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 Posted 02/04/2009  10:48 am Show Profile   Bookmark this topic Add basicbob101 to your friends list Get a Link to this Message Number of Subscribers
Not sure I get it, is there no double dies w/o notching? How/why does notching occur? If the master die is double punched to create a double die (versus a double strike or Machine Doubling)how would this process create a "notch" which would have to be a raised portion on the die?

Is there a good discussion/article somewhere on the entire minting process (in extreme detail) from start to finsh?

thanxz
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coop's Avatar
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 Posted 02/04/2009  10:59 am  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
That's a bunch of loaded questions. On coppercoins forum one member covered the 9 different classes of doubled dies. Lets see if this answers some of your questions:
http://www.coppercoins.com/forum/vi...hlight=class
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basicbob101's Avatar
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 Posted 02/04/2009  12:01 pm  Show Profile   Bookmark this reply Add basicbob101 to your friends list Get a Link to this Reply
thanxz coop,

I found an 89 D LMC that must be a double strike, don't see any notching.
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coop's Avatar
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 Posted 02/04/2009  12:47 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Bob: The 1989 Cents have wider devices starting that year to 1991. Compare your coin with another you find to see if it is really different. It just looks different because of the wider/fuller devices on the reverse.
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coppercoins's Avatar
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 Posted 02/04/2009  1:53 pm  Show Profile   Bookmark this reply Add coppercoins to your friends list Get a Link to this Reply
1992 also has thick devices on the obverse. It's a one-year obverse type.
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Jazzcoins's Avatar
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 Posted 02/04/2009  2:22 pm  Show Profile   Bookmark this reply Add Jazzcoins to your friends list Get a Link to this Reply
I think the class 6 distended hub doubling usually only indicates extra thickness on the letters which rarely exhibits separation I don't think you will see any notching on that specific hub doubling So that;s a doubled die without notching class 6

Jazzcoins Joe
Edited by Jazzcoins
02/04/2009 2:31 pm
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coop's Avatar
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62064 Posts
 Posted 02/04/2009  6:04 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Here is an example of a class 6 doubled die.
What-Is-Relationship-Btwn-
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