Author Topic: Holes, cracks in `most-secure' new £1 coin ???  (Read 666 times)

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Offline malj1

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Holes, cracks in `most-secure' new £1 coin ???
« on: April 28, 2017, 08:15:55 AM »
On eBay today: a mystery coin which is in fact the centre of one these new pounds.
Malcolm
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Offline Bimat

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #1 on: May 02, 2017, 05:21:48 AM »
On eBay today: a mystery coin which is in fact the centre of one these new pounds.

The Sun now has a story on it!
Aditya
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Offline augsburger

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #2 on: May 02, 2017, 06:07:08 AM »
And the Sun even manages to equate secure with security like a bank, oh, jeez, who buys this TRASH? It's like they're telling their 'readers' that people are going to break into their coins and.... and... and why would break into a coin?

Offline onecenter

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #3 on: May 02, 2017, 02:09:31 PM »
Looks like the 21st century version of the Australian Holey Dollar and Dump.
Mark

Offline chrisild

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #4 on: May 02, 2017, 09:29:43 PM »
Have not tried it out with a £1 coin yet, but the €1 can be separated with a little effort. Leaving it in a freezer for a few hours, and then dropping it, helps. ;) Has something to do with different thermal expansion coefficients, I once learned ...

Christian

Offline FosseWay

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #5 on: May 02, 2017, 09:33:47 PM »
I've never taken a £2, €1 or €2 apart, and I've yet to see a £1 in real life, but occasionally Italian 500 lire coins would spontaneously disintegrate. These have a groove in the outer ring (around the circumference of the hole) and the middles have a corresponding ridge. Presumably this is supposed to offset the different thermal expansion characteristics of the metals.

Offline onecenter

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #6 on: May 02, 2017, 10:07:44 PM »
I have some old Italian L.500 bimetallics that rattle, but I would never try to destroy a coin.  Makes me shudder.

Long ago, the Paris Mint had come up with a minting process that "locked" the center and ring as the planchet was struck.  I would imagine that such important technology has been shared with other European Union nations and possibly worldwide.
Mark

Offline chrisild

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #7 on: May 02, 2017, 11:31:57 PM »
Taking such an absolutely not rare coin apart out of sheer curiosity is excusable, I think. (After all, I have done it myself one time. ;) ) More about the technology is in this older topic by the way ...

Christian

Offline eurocoin

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #8 on: May 03, 2017, 09:46:07 AM »
Good morning!



Offline chrisild

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Offline velind

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Re: Holes, cracks in `most-secure' new £1 coin ???
« Reply #10 on: May 04, 2017, 06:37:50 AM »
Copy paste from Times of India news paper. (To be verified)

Zlata Rodionova
THE INDEPENDENT

The new 12-sided £1 coin described as the most secure in the world is facing a controversy just a month after entering circulation.

Some of the new coins, being sold on eBay , appear cracked or seem to be missing the middle part of the coin. Sellers say “minting errors“ have caused a number of the coins to separate. John Taylor, a coin collector, told The Sun: “It is a definite Royal Mint error. The sellers claimed they had come from a sealed bag from the bank, which in turn came from the Royal Mint.“