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Strange Tone Pattern


KennyJones

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There's a Strangely toned PCGS MS-67 Silver Eagle for sell at Great collections. The obverse looks naturally tone but the reverse has a very strange pattern and I'd like opinions on what could have made it happen that way.

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I know it looks blindingly obvious that the toning is artificial in some way. That's why I feel as though I'm missing something because it would or should have been the case for PCGS but it was deemed authentic and given a grade instead.

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You do see some pattern toning on Morgans if a coin has been against the canvas sack material when stored. Some coins were stored in sacks for 70 years or so. It is thought some kind of chemical in the canvas caused such toning.

I have read that coins with a criss-cross pattern are found but it's difficult to see how such a large grid-like pattern as the one seen here could be produced.

Profile picture with thanks to Carl Vernon

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Could it be the coin was graded with even tone and then continued to tone in the slab, revealing an artificial method of toning?

I then went to the pcgs website and entered the 8 digit certification number, so I could check the origin photographs against the current ones, only to find the number being rejected. It could be the server isn't working, but I'd be interested to see if anyone else can access the pcgs database for this coin.

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I looked up a few PCGS slabs and they were all on the database, so that's working. The only one that didn't register was this. I'm calling fake slab. Which brings into doubt the whole sale of this coin.

edit. looks like it's been pulled from the sale. https://www.greatcollections.com/Coin/827378/2000-1-Silver-Eagle-PCGS-MS-67-Toned

I'm amazed they don't check the numbers on the databases before listing them or even accepting them on consignment

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23 hours ago, sovereignsteve said:

You do see some pattern toning on Morgans if a coin has been against the canvas sack material when stored. Some coins were stored in sacks for 70 years or so. It is thought some kind of chemical in the canvas caused such toning.

I have read that coins with a criss-cross pattern are found but it's difficult to see how such a large grid-like pattern as the one seen here could be produced.

Agreed.  Not sure if you have seen this but is an excellent read on Morgan toning.  https://www.monstertonedmorgans.com/all-about-toned-morgans

Not my circus, not my monkeys

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Strange indeed...not seen anything like this before, but have seen some fairly obvious “corona / ring” artificial toning on ASE’s (Ungraded). 
 

Best

Dicker

Not my circus, not my monkeys

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