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All Forums Category: Australia, New Zealand, and South Pacific (Oceania) Coins and Currency Forums Forum: Coins, Bank Notes, and Paper Money: Australia, New Zealand, & South Pacific (Oceania)

Thin 2003 10 Cent Coin. Please Explain?

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Author	Replies: 7 / Views: 457
Seenbeen New Member Australia 2 Posts	Posted 01/30/2022 11:22 pm Hi All, I found a very thin 2003 10 cent coin. See images below showing both faces and an image of it on top of a standard 10 cent coin. As can be seen from the images it is much thinner and its diameter is slightly smaller than a standard 10 cent coin. I have had a brief look online (noting I have never researched coins before) and I was unable to find anything similar. I am rather curious what could have caused the coin to be so much thinner and if anyone has seen this before? I thought maybe it could be counterfeit but I am not convinced counterfeiting a 10 cent coin is worthwhile. Thanks. Edited by Seenbeen 01/30/2022 11:31 pm Report this Post to the Staff

Sap Moderator Australia 14375 Posts	Posted 01/31/2022 12:18 am If a coin has generally "shrunk" in all dimensions (diameter and thickness) as this coin has, then the usual answer to how it was made, is: acid. A strong acid has corroded all the surfaces evenly, causing the coin to shrink while preserving the details on the surfaces. No, I don't know what acid to use to make a cupronickel coin do this. Coca-cola will do this to bronze coins, but I don't think it's strong enough for cupronickel. You might need to upgrade to hydrochloric or something similar. Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis Report this Post to the Staff
Seenbeen New Member Australia 2 Posts	Posted 01/31/2022 12:43 am Thanks for the response. Fascinating that acid can shrink the coin while still preserving the details. Report this Post to the Staff
Basil Pillar of the Community Australia 774 Posts	Posted 01/31/2022 03:52 am Interesting but could be anything including PMD. Report this Post to the Staff
coaster Pillar of the Community Australia 1117 Posts	Posted 01/31/2022 05:23 am Hi Seenbeen and Apparently electricity can be used to shrink a coin! http://www.capturedlightning.com/fr...gallery.html Edited by coaster 01/31/2022 07:38 am Report this Post to the Staff
jbuck Moderator United States 113567 Posts	Posted 01/31/2022 4:25 pm to the Community! Coin Collector Since 1978 My Avatar My Old Avatar My 7070 My Eisenhower Dollars CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
Coinanthebarb New Member Australia 30 Posts	Posted 02/01/2022 04:09 am Quote: Apparently electricity can be used to shrink a coin! Woah, that's really interesting! Report this Post to the Staff
Mr T Pillar of the Community Australia 2014 Posts	Posted 02/20/2022 01:13 am Quote: Apparently electricity can be used to shrink a coin! Fascinating. But yeah probably acid - the reverse looks a bit pickled, more so that the obverse. Coin Curiosity - Coins of the British Commonwealth \| My British Bronze Halfpenny, Farthing & Third-Farthing Book Report this Post to the Staff
	Replies: 7 / Views: 457

All Forums Category: Australia, New Zealand, and South Pacific (Oceania) Coins and Currency Forums Forum: Coins, Bank Notes, and Paper Money: Australia, New Zealand, & South Pacific (Oceania)

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