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Post Your Pictures Of Low Mintage Coins In Terrible Condition

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 Posted 09/28/2022  04:23 am  Show Profile   Bookmark this reply Add Princetane to your friends list Get a Link to this Reply
It is a New Zealand Sixpence of the King George V era, meaning it dates from 1933 to 1936, I recognise the Huia and Kruger Grey portrait of the king in his robe, here is what it should look like.

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Australia
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 Posted 09/28/2022  04:25 am  Show Profile   Bookmark this reply Add ttkoo to your friends list Get a Link to this Reply
Oh the 'Tane is good!
The Ox moves slowly, but the Earth is patient.
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Australia
803 Posts
 Posted 09/28/2022  06:55 am  Show Profile   Bookmark this reply Add MachinMachinMan to your friends list Get a Link to this Reply

Quote:
Oh the 'Tane is good!


He certainly is.

Here is what it looks like after a four day soak and a wipe down with a tissue. (The solution turns blue due to the copper (II) ions)




Still junk silver, but what an improvement. Pity it wasn't a 1935.

Thanks Sap for the tip.
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 Posted 09/28/2022  07:04 am  Show Profile   Bookmark this reply Add ttkoo to your friends list Get a Link to this Reply
Where did your source the chemical solution?
Amazing difference, well done.
The Ox moves slowly, but the Earth is patient.
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Australia
803 Posts
 Posted 09/28/2022  07:15 am  Show Profile   Bookmark this reply Add MachinMachinMan to your friends list Get a Link to this Reply

Quote:
Where did your source the chemical solution?


I work in a laboratory so I have access to all sorts of chemicals. Disodium EDTA is a solid. Just dissolve it in water. I made about a 3% w/w solution.

As Sap said in his thread, if you used it on a pure copper coin the whole thing might dissolve.

Apparently EDTA is a common food additive. If it does what I showed above to a coin, imagine what it does to your stomach. Luckily stomachs aren't made of heavy metals.
Edited by MachinMachinMan
09/28/2022 07:18 am
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United States
118429 Posts
 Posted 09/28/2022  09:39 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply

Quote:
Here is what it looks like after a four day soak and a wipe down with a tissue... Still junk silver, but what an improvement.
Well done!

The gained experience alone makes it worthwhile work.
Pillar of the Community
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 Posted 09/28/2022  1:03 pm  Show Profile   Bookmark this reply Add Princetane to your friends list Get a Link to this Reply
Amazing, the coin is fine, not junk silver. Worth about twice melt.

Also the 1935 Threepence is rare, not the Sixpence which like most KGV is scarce in VF+ and rare in UNC, but common in Fine or lower condition.

PS: Tane is my real name.
Edited by Princetane
09/28/2022 1:18 pm
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 Posted 09/28/2022  7:22 pm  Show Profile   Bookmark this reply Add ttkoo to your friends list Get a Link to this Reply

Quote:
I work in a laboratory so I have access to all sorts of chemicals. Disodium EDTA is a solid. Just dissolve it in water. I made about a 3% w/w solution.

Thanks MMM, learning new stuff every day


Quote:
PS: Tane is my real name.

A pleasure to make your acquaintance, Tane

The Ox moves slowly, but the Earth is patient.
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 Posted 10/20/2022  12:44 am  Show Profile   Bookmark this reply Add MachinMachinMan to your friends list Get a Link to this Reply
I let out an audible "Yuck!" when I held this 2017 100 years of ANZAC coin (mintage 1.9 million) in my hand.

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 Posted 10/20/2022  10:12 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply

Quote:
I let out an audible "Yuck!" when I held this 2017 100 years of ANZAC coin (mintage 1.9 million) in my hand.
Yikes!
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Australia
803 Posts
 Posted 11/09/2022  12:09 am  Show Profile   Bookmark this reply Add MachinMachinMan to your friends list Get a Link to this Reply
Pair of 2014 AIATSIS (Australian Institute of Aboriginal and Torres Straight Islander Studies) 50c. Mintage 3 million.


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 Posted 11/10/2022  12:05 am  Show Profile   Bookmark this reply Add MachinMachinMan to your friends list Get a Link to this Reply
And here's a 2017 Mabo 50 cent coin (mintage 1.4 million). They are hard to come by in my neck of the woods so I'd prefer them to not look like this:

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 Posted 11/10/2022  09:20 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply

Quote:
And here's a 2017 Mabo 50 cent coin (mintage 1.4 million). They are hard to come by in my neck of the woods so I'd prefer them to not look like this:
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 Posted 11/24/2022  06:22 am  Show Profile   Bookmark this reply Add MachinMachinMan to your friends list Get a Link to this Reply
1993 fifty cent (still Australia's lowest mintage 50 cent)

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