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 Replies: 21 / Views: 4,199 |
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Pillar of the Community
Australia
507 Posts |
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Pillar of the Community
Australia
4411 Posts |
Looks like heavy doubling. This is fairly common on the 2001 coins for some reason. Is it a federation of COA?
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Valued Member
Australia
369 Posts |
Nice doubling. 50% of people are intersted in this type of variety and 50% will tell you to spend it. I collect what interests me no matter what anyone else says. Reasonably common if you go through 1000's of 50c pieces, but the average person may never see one. Not much demand for it so not really worth anything.
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Bedrock of the Community
United States
10284 Posts |
I would rather see just a nice clear head-on shot of the coin with the doubling. If this is Die Deterioration or Machine Doubling it sure does resemble a doubled die. Often we see your every day Machine Doubling with questions of whether they are doubled dies. Although you don't ask or state either way, this post is one of the best showing a questionable coin that I've seen as to whether it is MD or not. Edited by TNG
03/28/2012 5:16 pm
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Pillar of the Community
Australia
653 Posts |
Hi FNQ
Yes, I have two of these 2001 specimens also (see "Show and Tell - Part 2").
It is unique enough for me to keep in the "mint error" section of my collection.
Of course, I am also interested if there are certain years when these "mint error" coins are particularly frequent. And the reason why (new machinery, new technology at the mint etc. )
Squire
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Pillar of the Community
Australia
4411 Posts |
2001 is a very common year for this sort of error
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Pillar of the Community
 Australia
507 Posts |
Thanks all  @browne Yes, it's a Fed - if you're finding 2001 COA's, feel free to send a couple my way   @Squire Indeed you have. Do your examples exhibit the same characteristic of uneven doubling being strongest on the right hand side - I notice your photos also focus on the "Australia 2001"? @Nickelguy It would be more likely to be Machine Doubling - what I thought was strange was the uneven nature of the doubling, which got me pondering the mechanics behind this or other potential causes. Anyway here's a face-on scan...  |
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Pillar of the Community
Australia
653 Posts |
Hi FNQ Yes, from memory my two 2001 50 cent coins had the strongest doubling on the "Australia 2001" lettering, and less so on the "Elizabeth II" side. I shall provide a better scan of my coins tomorrow - both sides !. Yes, FNQ, the uneven "doubling" also made me wonder how this might have been caused in the minting of the coin  . Any ideas from the more experienced numismatists would be appreciated  . Squire |
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Pillar of the Community
Australia
653 Posts |
As promised I have attached my two "doubled" 2001 50 cent pieces. The photography is not the best, but I hope it points out the main features. Firstly, the doubling is indeed stronger on the "Australia 2001" side of the coin. Surprisingly, the top coin also shows doubling on certain parts of the reverse. On the back of the Kangaroo and also on the "5" of the 50. The mystery deepens Squire  |
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Pillar of the Community
Australia
653 Posts |
Had another go at photographing my 2001 "doubled" 50 cent piece. Actually, it turns out that the two 2001 "doubles" in my possession are quite different  . One has doubling on the "Australia 2001" script and around the right and bottom of the Queen's portrait. The second one (shown below) has doubling as above, but also over particular parts of the reverse. The Kangaroo, the Emu and also the "5" in 50. What a strange aberration !. I wonder how this could have been created ?. Squire   |
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Pillar of the Community
Australia
4411 Posts |
A federation state or federation coa?
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Pillar of the Community
1119 Posts |
i have one very much the same squire, except australia and date are more like the first pic in the thread
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Pillar of the Community
Australia
507 Posts |
Thanks for that last pic Squire - that's the one I was hoping to see. Yours, like mine, is affected to a greater degree on the right hand side of the obverse. In absence of advanced technical knowledge of the intricacies of Machine Doubling, this leads me to propose the following speculative questions: The obverse is the "struck" side of the coin? There has been minor rotational movement during the strike? The obverse die is not set evenly? |
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Pillar of the Community
1119 Posts |
struck twice and the coin bounced after the first, or lifted with the striking die only to fall slightly before the second impact?
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Pillar of the Community
Australia
552 Posts |
I agree with most staments made on 2001 50c Coin
Doubling on this coin is quite common on both obverse and reverse
Same is found with state 50c coins also espicllay ones released into circulation (not seen and UNC version with major errors to date)
Makes good sample coin to point errors along with 2005 remebrance 50c coin which is also renowed for exhibiting errors
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Pillar of the Community
Australia
653 Posts |
All these observations make me wonder why this "doubling" occurred only in 2001 . Squire |
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Replies: 21 / Views: 4,199 |
Posted 03/28/2012 11:00 am
