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How did this happen?

Posted: Sat May 28, 2022 4:19 pm
by rogerg
Heri.jpeg
Heri.jpeg (172.07 KiB) Viewed 1541 times
This sold at a famous auction house eight years ago. Nice clean looking coin, now it is up at another house and it is tarnished. I don't say toned. I have long suspected that holders could "leak". That would mean that all those colorful coins people are paying premiums for will one day be BLACK.
GC.jpg
GC.jpg (176.91 KiB) Viewed 1541 times

Re: How did this happen?

Posted: Sat May 28, 2022 6:13 pm
by messydesk
Slabs are not impervious to gasses. This one may have spent some time in a hostile environment, maybe intentionally, maybe not.

Re: How did this happen?

Posted: Sat May 28, 2022 8:20 pm
by RogerB
Kentucky coal mine?

Re: How did this happen?

Posted: Sat May 28, 2022 10:40 pm
by blh74
Is that from a poor rinse from a dip?

Re: How did this happen?

Posted: Sun May 29, 2022 12:07 am
by messydesk
Those are usually splotchier than this. It also looks like the basket prong at the top protected the coin from toning there.

Re: How did this happen?

Posted: Mon May 30, 2022 11:38 pm
by blh74
messydesk wrote:
Sun May 29, 2022 12:07 am
Those are usually splotchier than this. It also looks like the basket prong at the top protected the coin from toning there.
I see the unaffected area now.

Re: How did this happen?

Posted: Tue May 31, 2022 3:50 pm
by Andy Hansen
Those older holders used "rivets" which, I don't believe are as tight as the newer holders.

Re: How did this happen?

Posted: Tue May 31, 2022 4:49 pm
by Longstrider
May be the work of a Coin Doctor.🐍

Re: How did this happen?

Posted: Tue May 31, 2022 8:31 pm
by fogie
Oxygen + silver..

Re: How did this happen?

Posted: Tue May 31, 2022 9:54 pm
by Vam-mysterio
I actually like it better ,
Such of a high grade coin,
With that toning
Though is not original
But artificial ,
All white just looks plain to me