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 Replies: 15 / Views: 5,967 |
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Valued Member
Australia
323 Posts |
Hi...just curious what causes an 'orange peel' effect such as on this 2008 five cent coin  adding another photo ...as you can see it is on the "5" "face" "hands" and "feet"  Edited by larena
01/04/2012 10:18 am
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Bedrock of the Community
Australia
21788 Posts |
I suspect grease or oil droplets between the die and the planchet. Looks like the image of a fine spray.
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Valued Member
Australia
490 Posts |
tossed out the window of a car at speed...?
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Pillar of the Community
Australia
7096 Posts |
Gravel rash, probebly been dropped on a road for while. The marks are only on the raised part of the coin design  Edited by trout1105
01/04/2012 6:15 pm
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Valued Member
 Australia
323 Posts |
no..it's not damage...coin is in very good condition...I think I like the first reply...if you look closely its also on the lower area under the '5'and on the spikes..surface smooth...not damaged
Edited by larena
01/04/2012 7:51 pm
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Pillar of the Community
Australia
7096 Posts |
Can you post a pic of the other side
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Valued Member
Australia
323 Posts |
This is the obverse  ..and under microscope  Edited by larena
01/04/2012 8:31 pm
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Pillar of the Community
1119 Posts |
a test coin to see if it looked better with a dimpled look?  Edited by erkle
01/04/2012 9:03 pm
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Valued Member
Australia
323 Posts |
actually, I quite like the look  |
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Valued Member
Australia
490 Posts |
old gravel rash worn smooth by three years rubbing?
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Valued Member
Australia
323 Posts |
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Pillar of the Community
Australia
7096 Posts |
Imagine poor old 5 cent coin on a busy city street, Nobody would take the effort to pick up a lousy 5 cents (not worth the effort) poor little bugger.
People keep walking all over it and grinding it into the sidewalk.
Then after a few weeks some young kid spots it and with a beaming grin asks mum if they can spend it on lollies.
So off they trot to the lolly shop with the young uns new found fortune and after Mum has had to add a couple of dollars the lollies are bought.
Then the battered but relieved lill 5 cent goes back into circulation.
I think that is a more likely scenario than a grease or oil splatter at the mint
Edited by trout1105
01/04/2012 11:27 pm
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Valued Member
Australia
323 Posts |
I had an idea I had read about the 'orange peel effect' and copied this from an article.
'3: Indications that the die is nearing the end of its useful life become more apparent with poor overall detail, a dull finish indicative of a low pressure strike, potential porosity of a coin's surface passed from the die, often coined the orange peel effect due to the coin's surface being reminiscent of orange peels.'
and this
'Many times a worn die strike, or one struck on an improperly annealed planchet, will exhibit a "rippled" effect on the coin, similar in appearance to the skin of an orange.'
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Pillar of the Community
Australia
7096 Posts |
The orange peel affect is a real die problem at the mint. My point is that the affect on your coin is only on the raised area of the coin not on the entire surface. Here is a pic I "borrowed" from another CCF post on this subject. Notice the effect is on all of the coin and not just on the high areas. The effect on the 1 cent coin looks like tiny bubbles. The effect on your coin looks like tiny abrasions   Edited by trout1105
01/05/2012 12:13 am
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Valued Member
Australia
323 Posts |
would like to see that pic closer up...doesn't appear to be on wording The pic I have sent shows a consistent pattern so I am still thinking it is something to do with the stamping , rather than PMD |
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Pillar of the Community
Australia
1005 Posts |
I am with trout1105 I think PMD. |
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Replies: 15 / Views: 5,967 |
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Posted 01/04/2012 6:06 pm
