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 Replies: 15 / Views: 2,676 |
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Pillar of the Community
Australia
1041 Posts |
Edited by shanew
04/09/2013 04:19 am
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Pillar of the Community
Australia
4411 Posts |
Your scales must be way off because 2.6 is way under what it should be showing for an Aussie 10c.
Many old 10c dont have reeding, it has just worn away and the colour is possibly from environmental damage. The diameter is the same from your pictures and the difference in weight 0.6grams (from inaccurate scales) isn't unusual.
In the first photo the reverse shows some silver colour around the details which further leads me to suspect environmental damage.
The other very remote possibility, other than foreign planchet or more likely, damage, is that it was incorrectly annealed. I have seen a couple 20c coins like that.
I would recommend getting it XRF'd before you get too excited.
Edited by enworb
04/09/2013 03:38 am
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Pillar of the Community
 Australia
1041 Posts |
enworb gave it a scratch on the rim its copper under  |
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Pillar of the Community
Australia
4411 Posts |
Get someone to zap it and see what the composition is.
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Valued Member
Australia
59 Posts |
definitely looks copper to me I would look into it further like enworb said.
Whats the story with the edge milling ?
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Pillar of the Community
Australia
507 Posts |
This coin exhibits all the characteristics of a "weathered" coin, most probably from being on/in the ground, and are found in circulation on a semi-regular basis.
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Valued Member
Australia
59 Posts |
yes most probably in the ground
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Pillar of the Community
Australia
1041 Posts |
going to bris vages tomorrow will get it tested
I have had weathed coin many time not like this one we will see tomorrow if it is copper what planchet could it be at thay weight and size I can find anything
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Pillar of the Community
Australia
4411 Posts |
You need an accurate weight to work that out.
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Bedrock of the Community
Australia
21788 Posts |
Two things that I have observed on 10 cent coins: 1. copper appearance - ground burial can be the cause. It would still have white metal underneath the brown patina. 2. no edge milling. I have fooled around to remove edge milling myself, so that it looks like a Two Cent coin in this regard, The only problem is that the finished edge is not quite flat across the thickness. Never seen both these things together, but it could be easily contrived. |
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Pillar of the Community
Australia
507 Posts |
Here's one of your typical "baldies" on top of the heap. Combine a commonly worn coin with some earth, and hey presto, 10c piece on "foreign copper planchet"...  |
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Pillar of the Community
Australia
515 Posts |
Never ever scratch a coin you think may be valuable as any sort of test. It's very likely environmental damage and no edge milling a result of wear as stated above. Just to check though get it tested on an XRF machine, most gold/silver buyers should have one of these to test metal fineness.I wouldn't be getting excited though.
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Valued Member
Australia
271 Posts |
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Pillar of the Community
Australia
515 Posts |
Here's my environmental roadkill park footpath find.  |
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Pillar of the Community
Australia
4411 Posts |
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Pillar of the Community
Australia
1006 Posts |
I am pretty sure that it would be cupronickel.
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Replies: 15 / Views: 2,676 |
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Posted 04/09/2013 04:29 am
