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 Replies: 20 / Views: 3,581 |
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New Member
Australia
48 Posts |
Found it in my change. The edge seems to be slightly clipped of shaved off. It is on an angle and does not go on to the other side. I think that it's been shaved off by a sanding machine (but what do I know). So what's happened here?  |
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Moderator
 Australia
16826 Posts |
Either that, or it's been dropped.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis
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Bedrock of the Community
Australia
21786 Posts |
I am thinking that it is a partial lamination of the planchet, and a sliver of metal has fallen off, after it has been through the coining press.
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New Member
 Australia
48 Posts |
Thanks for your reply Sap. I don't think it's been dropped. It's far too large to have been dropped. Notice the area around the clip (it's hard to see on the photo but it's there), there is a patch where it isn't as dark as the rest of the coin. Are you sure that this isn't an error (or something of the sort)?
Edited by Mitchell
09/09/2010 04:05 am
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New Member
Australia
48 Posts |
@sel_69l
I don't quiet understand what you mean. How could the coin lamination have anything to do with this?
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Pillar of the Community
Australia
1040 Posts |
Sometimes when the alloys for the blanks are made they aren't mixed correctly, or impurities find their way in. This causes weakness in the planchets which can cause lamination errors. Basically a section of the coin simply comes apart from the rest of the coin, hence lamination error.
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Pillar of the Community
Australia
1040 Posts |
lamination
A thin piece of metal that has nearly become detached from the surface of a coin. If this breaks off, an irregular hole or planchet flaw is left.
This is from the CCF glossary.
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New Member
Australia
48 Posts |
Thanks, latman, for clearing that up. So it's possible that this could be a lamination error? Are they rare errors?
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Pillar of the Community
Australia
1607 Posts |
Hi, Is the surface where the metal is missing from smooth or sorta jaggered/rough ? any chance of a photo of that surface ?
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New Member
Australia
48 Posts |
It's very smooth to the touch. However there are some very faint lines on it (maybe little scratches).
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Pillar of the Community
Australia
1607 Posts |
In that case I would lean toward it being post mint tampering,sanding or similar.
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New Member
Australia
48 Posts |
That's a little disapointing  . Well, at least I know what's happened now. Thank you. |
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Valued Member
Australia
153 Posts |
Even without seeing the coin its obviously a post mint altered coin,intentional or not
What is the date on this 50c Michell?
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Bedrock of the Community
Australia
21786 Posts |
Mitchell: I have a number of Oz. ten cents (with the lyrebird reverse) that have laminated planchets. I fact, I have a couple of these where the coin has completely split into separate reverse and obverse pieces, both in 10c. and 20c. pieces. New Zealand coinage also suffered from this problem at the same time
Being also in Oz, (Brisbane), Sap would probably be familiar with this type of planchet defect. I have not seen a delaminated 50 cent coin, but it would not surprise me that they would exist. The fault would have occurred in the rolling of the strip prior to blanking. I am not familiar with the rolling process, perhaps it has to do with temperature control lacking, or impurities in the strip.
The delaminated Oz. coins that I do have were made in the early '70s.
As for the edge, I guess that being weaker at that point, a sliver for metal has just broken off in that location. The edge at that point is slightly irregular, and from looking at the picture on screen, that seems likely.
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New Member
Australia
48 Posts |
@ jonsopet
It was made in 1980
@sel_69l
Thanks for your information. At the edge, right around the part in question, it is slightly lighter than the rest of the coin. Could this have something to do with the lamination?
I've got some conflicting responses. I'll hold onto the coin for a while and try to get an expert to look at it in person.
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Pillar of the Community
Australia
1607 Posts |
I'll hold onto the coin for a while and try to get an expert to look at it in person.
That would be the best thing to do,when you find out could you please come back here & let us know ?
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Replies: 20 / Views: 3,581 |
Posted 09/09/2010 03:59 am
