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Underweight 5 cent

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Valued Member

Australia
122 Posts
 Posted 10/28/2011  02:19 am Show Profile Bookmark this topic Add Ingine to your friends list Get a Link to this Message

I have also found a 1981 5 cent that weighs 2.77grams. Compared to the normal weight which is 2.83 grams.
Although it is worn it still has almost all of it's detail.
Does anyone know how this coin might have gotten under weight?

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1244 Posts
 Posted 10/28/2011  02:41 am  Show Profile Bookmark this reply Add Australian coin to your friends list Get a Link to this Reply
Maybe a different planchet, like from another country
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Australia
8710 Posts
 Posted 10/28/2011  02:57 am  Show Profile Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
I note that the date is 1981. I am not a specialist on Australian decimals, therefore I have a question:
Did the R.A.M. contract out any of the 1981 5 cent production to a non Auasralian mint, e.g. the Royal Mint, or the Royal Canadian Mint?

If the answer is 'yes', especially if it is the Royal Mint, it is highly probable that a blank from another country could have got mixed up in the order for the Australian coins.
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Australia
974 Posts
 Posted 10/28/2011  03:11 am  Show Profile Bookmark this reply Add ozcoins to your friends list Get a Link to this Reply
RAM site says 5c was made at RAM, RCM, RMLL in 1981.
How did you notice the difference in weight?
Edited by ozcoins
10/28/2011 04:24 am
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1244 Posts
 Posted 10/28/2011  03:13 am  Show Profile Bookmark this reply Add Australian coin to your friends list Get a Link to this Reply
http://www.coincommunity.com/forum/...IC_ID=101063
Check out what mobofroos said, maybe there's something going on with the 1981 dated coins.
Valued Member
Australia
122 Posts
 Posted 10/28/2011  03:16 am  Show Profile Bookmark this reply Add Ingine to your friends list Get a Link to this Reply
The 1981 coin was minted in Wales or Canada but neither carry mint marks in order to tell the difference.
They both are listed as weighing 2.83 grams.
So yes sel_691 - it is entirely possible that the wrong planchet was used.
Thanks for the clue Australiancoin.
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1244 Posts
 Posted 10/28/2011  03:16 am  Show Profile Bookmark this reply Add Australian coin to your friends list Get a Link to this Reply
Maybe someone can make up a whole set with the UK planchets :)
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1244 Posts
 Posted 10/28/2011  03:18 am  Show Profile Bookmark this reply Add Australian coin to your friends list Get a Link to this Reply
p.s does anyone know what the UK coins are supposed to weigh, just to make sure
Valued Member
Australia
122 Posts
 Posted 10/28/2011  03:22 am  Show Profile Bookmark this reply Add Ingine to your friends list Get a Link to this Reply
Australiancoin - you're on to something there I reckon!
I will be a special eye out for these 1981 coins now!
ozcoins - I could feel the difference as soon as I picked it up (I was sorting a $40 bag of 5's at the time).
It felt thinner, and lighter. It also appears thinner.
Valued Member
Australia
122 Posts
 Posted 10/28/2011  03:30 am  Show Profile Bookmark this reply Add Ingine to your friends list Get a Link to this Reply
I don't know what the UK coins weigh, but I did just compare the sizes of all my UK coins to this 5c I have and none of them matched up.
I will now compare with my Canadian coins

NO go.

Edited by Ingine
10/28/2011 03:39 am
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 Posted 10/28/2011  05:27 am  Show Profile Bookmark this reply Add Australian coin to your friends list Get a Link to this Reply
The UK five pence is not a match, which was my first thought
But you know what is UK sixpence and South Africa -- unfortunately the timeline doesn't match up.

Found this when surfing the net, wrong planchet the same weight
http://www.icollector.com/1905-5C-N...g-st_i654408

This foreign coin weight is the same, unsure if it was produced at the same time.
http://en.numista.com/catalogue/pieces20531.html
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