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 Replies: 21 / Views: 4,208 |
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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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Pillar of the Community
Australia
653 Posts |
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Pillar of the Community
Australia
653 Posts |
I have recently found a 50 cent Federation coin (WA) that shows nice "doubling" on the Obverse and Reverse. I have attached an image below. As for the 2001 Federation coin that I have shown earlier, the doubling is over particular parts of the design only . Squire  |
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Pillar of the Community
Australia
653 Posts |
Here is the 2004 50 cent piece that I found last night. A lot of "doubling" over selected parts of the design. Squire  |
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Formerly nancyc
Australia
5385 Posts |
Quote:
All these observations make me wonder why this "doubling" occurred only in 2001 I'd guess it's due to the fact they minted 43.1m, double (or more) of most previous years. I'd say the dies were used until they were virtually worn out. life is a mystery to be lived not a problem to be solved
Edited by Nevol
04/20/2012 01:59 am
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New Member
Australia
44 Posts |
How interesting Squire! I found two 2004 50's with almost exactly the same doubling all over it last night as well. No photo's as yet tho.
Rita
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Pillar of the Community
Australia
653 Posts |
 RAD change... (really throwing out the "welcomes" this week !. I must admit, since joining Coin Community in March of this year I have learned a lot. I now have a comprehensive list of coin varieties and errors to look for. Far more than I ever could have gained from McDonald or other coin books. Or from randomly browsing the Internet. "Show and tell" is also fun and very informative. I find it inspiring when other members turn up interesting coins in their change and post pictures of these  . Thanks to nancyc for the information re. coin mintage numbers . What source do you use for these numbers ?. Do you find McDonald's figures reliable ?. It would be interesting to see if there is a relation between coin doubling and mintage numbers. Squire |
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Posted 03/29/2012 9:58 pm
