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Laser-Altered High End Coins Caught At Auction

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Bedrock of the Community
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 Posted 11/23/2024  09:10 am  Show Profile   Bookmark this reply Add Coinfrog to your friends list
Thanks much for this indeed.
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 Posted 11/23/2024  11:09 am  Show Profile   Bookmark this reply Add ArrowsAndRays to your friends list
How does a laser "boost the condition" of a coin?
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Italy
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 Posted 11/23/2024  12:11 pm  Show Profile   Bookmark this reply Add joe_77 to your friends list

Quote:
How does a laser "boost the condition" of a coin?


The talk doesn't really go into details but I believe they are talking about laser tooling, which has been done on ancients for many years. They seem to imply it's a new thing for modern coins and/or in this particular usage.
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 Posted 11/23/2024  5:37 pm  Show Profile   Bookmark this reply Add tdziemia to your friends list
That was also my guess.
Outside of numismatics I think it's called laser ablation.
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 Posted 11/23/2024  6:54 pm  Show Profile   Bookmark this reply Add BStrauss3 to your friends list
I would guess it's a process like this:
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 Posted 11/23/2024  7:15 pm  Show Profile   Bookmark this reply Add Marv65 to your friends list
What next? I can see one day that rare coins will be "built" by highly advanced 3-D printing machines.
https://www.lboro.ac.uk/research/am...nufacturing/
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 Posted 11/26/2024  7:27 pm  Show Profile   Bookmark this reply Add jecz79 to your friends list
What a strange thing. The coin on the right looks worse.

But I always suspect dark patinas in silver hiding something. Too common.
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Italy
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 Posted 11/27/2024  02:47 am  Show Profile   Bookmark this reply Add joe_77 to your friends list

Quote:
What a strange thing. The coin on the right looks worse.


The coin I posted above was the easiest one to show with a side-by-side from the presentation. It's this coin (https://www.numisbids.com/n.php?p=l...4&lot=1179):

Laser-Altered-High-End-Coins-Caught-At-Auction

I personally don't like the toning on both those Victoria Crowns either (the crown above was the one that looked most suspicious and they found the whole ordeal out thanks to it) but I encourage you all to see the video I posted above, those coins looks very nice in real life! They have a very convincing approximation of the classical "coin drawer" patina.

Just copy past this in your browser, it starts at the right time: youtube.com/watch?v=idMEq11QePk&t=1625

Cheers
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 Posted 11/27/2024  4:46 pm  Show Profile   Bookmark this reply Add jecz79 to your friends list
Thank you. With that big image it is easier to see how it was done to hide the wear on the coin.Nasty.
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United States
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 Posted 02/18/2025  2:40 pm  Show Profile   Bookmark this reply Add LandonM to your friends list
Super interesting, but shouldn't really come as any shock.
Every single 'collectibles' market that assigns arbitrary value to things suffers from forgers, fakers and deceivers who employ technical talents to alter things to appear as something other than what they are (you should see the lengths they go to with high end art forgeries). There was a time when 'whizzing' was fairly new and smoking 60's/70's collectors, but that's very detectable if you know what to look for.

After a while, it gets into 'my grandfathers axe' type philosophical questions; if these alterations can be done so discretely and effectively that they're truly undetectable at face value... well... like it or not, we're all going to be living with them, because they'll be done and they cannot be detected... and as is the case with all problems like this, we've probably been living with this for longer than we realize.

That was the case with 'coin conservation' that was once considered a taboo, but eventually became accepted once people realized it had always been going on, all along.
Edited by LandonM
02/18/2025 2:52 pm
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 Posted 07/30/2025  02:24 am  Show Profile   Bookmark this reply Add Conder101 to your friends list
Back in the 1990's they had a short rash of alterers using lasers to do a very localized melting of the surface on gold coins to repair nicks and other contact marks on MS gold coins to make them mark free in order to increase their grades Since in general gold coins don't tone there was no patina to disturb. It could only be used on small marks because if you did it to large marks the disruption in the surface luster would be noticeable.

And how many remember the use of putty on gold coins to hide marks. Those actually got into PCGS an NGC slabs and were discovered several years later when th putty discolored.
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 Posted 07/30/2025  12:07 pm  Show Profile   Bookmark this reply Add loonielewy to your friends list
Musta been some nice gold putty. Shake my head.
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