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 Replies: 15 / Views: 3,017 |
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Pillar of the Community
Australia
1295 Posts |
I managed to pick this up on ebay last week where it was incorrectly labelled as a partial brockage. Try taking a look at this blog post on brockages if you dont know what they are. What it appears to be is a flip over double strike. From what I can tell an already struck coin has been struck again but has flipped over before being struck.  To make things easier I've highlighted the image in red to show the features of the host coin that are still showing.  I dont really understand physically how this can happen. The only ideas I have is that somehow an already struck coin has found it's way into the hopper of blanks feeding the coin press. Or somehow a struck coin does not leave the coining chamber (like a regular double strike) but flips over and is struck again. Edited by markn
02/26/2009 03:09 am
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Pillar of the Community
Canada
1931 Posts |
Thats really interesting. I wish I had one like that. I hope you got a good deal on it :)
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Pillar of the Community
Egypt
3470 Posts |
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Pillar of the Community
Poland
3201 Posts |
I have to admit that it's a great buy  |
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Pillar of the Community
United States
5318 Posts |
Wow...that's a fascinating coin! It appears to be re-struck, but is the obverse-to-reverse struck with the same alignment? One of the first things I noticed was the forepaws of the Roo on the neck of KGVI. |
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Formerly nancyc
Australia
5385 Posts |
Ooooh, I'd give my eye teeth for a coin like that. Great pick up!! life is a mystery to be lived not a problem to be solved
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Valued Member
Australia
363 Posts |
I am not 100%, but I think that it is referred to as a "Clashed Die" or "Clash Mark" where the obverse and reverse dies have come together - or 'clashed' - in the striking process without a planchet in between them. The coins produced after that from those pair of dies usually show varying amounts of mirror-image traces of an obverse design on the reverse, or, vice versa.
Cheers SG
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Formerly nancyc
Australia
5385 Posts |
I originally thought die clash too, but if it's a die clash, it's also rotated, and the chances of that would be pretty remote.
I wonder if anyone has or knows of a rotated die clash that has such clear imprints visible.
life is a mystery to be lived not a problem to be solved
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Pillar of the Community
United States
5318 Posts |
yep, and these second impressions are facing the right way--not a mirror image.
Just look at the date on the portrait. It reads the right direction when rotated.
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Formerly nancyc
Australia
5385 Posts |
So if it's not a mirror image, that rules out a die clash right?
I've got quite a few 10¢ die clash coins & they're all mirror image.
life is a mystery to be lived not a problem to be solved
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Pillar of the Community
United States
5318 Posts |
Yes...look at the bust impressed on the reverse, it's facing the right way too.  I really like this one! |
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Valued Member
Australia
363 Posts |
the other way I thought of was that someone has hit another coin against it with force (ie hammer) hard enough to imprint. not sure if those marks would be impact points though.
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Formerly nancyc
Australia
5385 Posts |
If it was caused by impact with another coin, the impact marks would be reverse images & that's not the case. For what it's worth, my opinion is it happened at the mint. life is a mystery to be lived not a problem to be solved
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Pillar of the Community
United States
5318 Posts |
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Pillar of the Community
 Australia
1295 Posts |
#1 Clashed dies Clashed dies occur when the hammer and anvil dies come together with no coin in between them. This results in some or all of the designs on each die being imparted on the other die. When a coin is struck with a set of clashed dies you will see mirror imaged features of the other side of the coin along with the normal design features. In addition, normally excuse features will be incuse AND normally incuse features will be excuse. Here is a clashed die coin. if you look under the roo's tail you will note you can see an incuse image of the queens face.  In the coin above the additional features are neither mirrored nor incuse. It is not a clashed die. #2 'Hammer' jobs People bashing coins against each other in order to create 'errors' is fairly common. These will usually show a couple of features that gives them away. Firstly, the new 'hammered' features will again be mirrored and incuse. Secondly, the features on the side of the coin that were not hammered will be obliterated or badly damaged as they have just been pounded against a hard surface. The coin below is chopmarked, but it show's the sort of damage you'd see from a so called 'hammer job' coin. Notice how the area of the coin opposite the marks is damaged and flattened.  In the coin above the features are neither mirrored nor incuse. The design features are not obliterated or damaged. It is not a hammer job. I am 100% certain this is a genuine double struck coin. Edited by markn
03/02/2009 6:56 pm
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Pillar of the Community
Australia
1015 Posts |
 This coin has flipped over in the press before the second strike. This is a one in a million coin and a great buy,Good one Mark  Edited by nuggethill
03/09/2009 5:21 pm
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Replies: 15 / Views: 3,017 |
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Posted 02/26/2009 06:04 am
