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Mint Error Or PMD On Bank Of Korea 1979 10 Won

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Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/17/2018  10:42 pm Show Profile   Bookmark this topic Add Lembafc to your friends list Get a Link to this Message Number of Subscribers
Hello all,

I have had this one for a while and just noticed the coin is not like his friends. There is a huge layer of material missing from the top right of the coin. After putting it under the loop, it doesn't look (to my novice eye) like PMD. The image from the die is visible in the missing layer, like it was struck after the chunk went missing. If it were PMD, the design from the image should be gone, no? There are don't seem to be any traces of PMD from an outside object taking the chunk out. Take a look at the pictures below and let me know what you all think. Mint errors from the Bank of Korea are pretty rare, so I'd like to see if it is.

Mint-Error-Or-PMD-On-Bank-Of-Korea-1979-10-Won
Mint-Error-Or-PMD-On-Bank-Of-Korea-1979-10-Won
Mint-Error-Or-PMD-On-Bank-Of-Korea-1979-10-Won
Mint-Error-Or-PMD-On-Bank-Of-Korea-1979-10-Won
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/18/2018  11:06 pm  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
A friend of mine also said this may be a struck through error. Any thoughts?
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Kopper Ken's Avatar
United States
3402 Posts
 Posted 02/19/2018  07:56 am  Show Profile   Bookmark this reply Add Kopper Ken to your friends list Get a Link to this Reply
Doesn't look as though it was a metal de-lamination that peeled away. More likely a contaminant piece of something was there when the blank was formed and subsequently fell off before the coin was struck. It does seem as some metal was 'pushed" into the area when the die hit.

KK
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/19/2018  11:25 pm  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
@KK Right that was what my buddy mlovmo suggested as another option. That it was struck through a foreign material.
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Pertinax's Avatar
United Kingdom
2133 Posts
 Posted 02/20/2018  04:48 am  Show Profile   Bookmark this reply Add Pertinax to your friends list Get a Link to this Reply

Quote:
Doesn't look as though it was a metal de-lamination that peeled away.

Does de-lamination occur only on plated blanks ?
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Kopper Ken's Avatar
United States
3402 Posts
 Posted 02/20/2018  08:11 am  Show Profile   Bookmark this reply Add Kopper Ken to your friends list Get a Link to this Reply
No Pertinax..de-lamination can occur on any coin. It is a process by which weakly bonded metal pulls away from each other. Most people call the errors laminations...but that is the process by which layers are "joined" together. Pulling apart is where they de-laminate. People have been using the wrong term for so long that it is now part of the numismatic culture.

Becoming part of the misnaming culture is similar to when you look at a worn grave stone and say that it eroded. Well the proper term is that it weathered and the particles/fragments eroded away. Weathering is the process by which rock is broken down into particles and erosion is the process of moving those particles.

So laminating is "putting together" de-laminating is "pulling/peeling apart"...so all your lamination error coins are actually de-laminations.

KK
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/21/2018  03:09 am  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
Kopper, that is exactly what mlovmo said to me in Facebook message. Everyone calls is the wrong thing. So you think this is most likely a struck through error?
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Kopper Ken's Avatar
United States
3402 Posts
 Posted 02/21/2018  11:05 pm  Show Profile   Bookmark this reply Add Kopper Ken to your friends list Get a Link to this Reply
Not necessarily struck thru...I see the impressed images which are very weak in the area so I'm thinking...the metal/or whatever came out before the die hit and that's why you have the faint impression in the depression.

IMHO

KK
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/22/2018  12:45 am  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
I plan on sending this fella in, but I wonder what NGC will call it.
Rest in Peace
Crazyb0's Avatar
10197 Posts
 Posted 02/22/2018  01:18 am  Show Profile   Bookmark this reply Add Crazyb0 to your friends list Get a Link to this Reply
Because of the roughness particularly on the right upper portion of 0, it was attacked by an acidic solution, maybe an acid or similar. It basically "etched" this area. Note also the denticles at 1 o'clock have that same effect. It is PMD, not an error of production or planchet flaw. A "lamination" falling off would look wholly different and not affect the devices that way.
Edited by Crazyb0
02/22/2018 01:20 am
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/22/2018  02:43 am  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
Noooooo Crazyb0~ Dont do this to meeeeeee :(
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Kopper Ken's Avatar
United States
3402 Posts
 Posted 02/22/2018  10:50 pm  Show Profile   Bookmark this reply Add Kopper Ken to your friends list Get a Link to this Reply
I can see what Crazyb0 is suggesting, but would the formation of the tops of the numbers still be somewhat visible below the "crater" rim if it was a normal strike and there was acidic PMD. I just feel that the little visible imaging was from a the striking die hitting the gutted out area and some metal flowing to create the ghosting imaging. Maybe some CCF member might have another similar example that could support either or a new position. I do not believe that this would be a coin with enough of a value to send in for grading.

KK
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/23/2018  12:01 am  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
If this in fact an error and not acid washing, this would definitely be worth sending in for grading. Bank of Korean coin errors are significantly more rare than the US. Outside of rotated die errors and weak strikes on the years, errors just don't happen here in Korea. For example, I discovered a very strong and obvious die clash error on a Korea coin last year and it was the first time anyone had ever seen it. I sent her in to NGC and immediately got an offer for $1,000 upon her return.
Formerly nancyc
Nevol's Avatar
Australia
5385 Posts
 Posted 02/23/2018  12:08 am  Show Profile   Bookmark this reply Add Nevol to your friends list Get a Link to this Reply
I'd say struck through grease/oil.
life is a mystery to be lived not a problem to be solved
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Kopper Ken's Avatar
United States
3402 Posts
 Posted 02/23/2018  08:15 am  Show Profile   Bookmark this reply Add Kopper Ken to your friends list Get a Link to this Reply
Lembarc:

Die clashes would result in multiple strikes, and there would be a number of coins that could potentially show the "variety". Think of the Bugs Bunny teeth Franklin half dollar US coin series. These are varieties and not true single coin errors. A market tends to develop either when it is a hub variety or a die variety because more than one person can obtain a copy. True errors tend to be single coins and are not a function of the hub or die.

So yes your die clash "variety" may have siblings which can be looked for. This "error" coin with the de-lamination and/strike through is an error, not likely reproduced and therefore unique. A much smaller collecting universe than variety collectors. Good luck with what you decide to do. Possibly you could try to sell it to a dealer specializing in errors.

KK
Valued Member
Lembafc's Avatar
Korea, Republic Of
489 Posts
 Posted 02/26/2018  07:41 am  Show Profile   Bookmark this reply Add Lembafc to your friends list Get a Link to this Reply
Yes you are correct and I own four die clash error 1 won coins. I know one other that has one, but they don't have the very strong die clash or the coin in nice condition. Either way, even a die clash coin error in Korea is a fun and big deal. I hope this 10 Won is a delam/strike through is a real error and it comes back from NGC as such. Thanks for the help~
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