Before and After

The TPG's are not perfect or omnipotent they make mistakes sometimes. If they always got it right and never made a mistake there would be no such thing as upgrades or the "crackout game", and AT coins would never get into slabs. But it happens.

 

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Are there usually 2 experts grading each coin? That's a question that I've always wanted to ask. This way, there'd be some checks and balances, with disparities in opinions going to a third binding moderator. Or are submissions graded by one expert only?

 

From what I have read it's 2-4 for the top two.

PCGS says 3-4:

"In all cases, at minimum, 3-4 graders are assigned to every coin for grading and verification."

https://www.pcgs.com/pcgs-grading-process-videohttps://www.pcgs.com/pcgs-grading-process-video

NGC says at least 2:
"Grading is a team effort, with at least two professional numismatists examining every coin."
https://www.ngccoin.com/coin-grading/grading-process/ngc-grading-process.aspx

 

Thanks very much for the info and links! I'm gonna read through them. Appreciate it.

 

Very true!
Its one reason I dont like toning.
Never did.
I like my silver coins silver. Copper is acceptable in red, brown chocolate or steel. But coins are metal and should look like ir.
As for TPG's. If there is no way to be sure, why dont they just ignore toning and grade on the coin?
How does toning hide cleaning?

 

Yes, true, but paint actually adds a layer of something foreign to the object painted. An airplane or ship gains a lot of weight when painted.
But toning is not an added substance.
Theoretically at least, whatever signs of cleaning are visible, should still be visible with toning.
Personally, I dont really know what the signs are of cleaning, other than the obvious. I once saw a Morgan on Ebay that looked fantastic initially, but when you magnified it, it had clear and obvious signs of whizzing. You could see the circular scratches. But people were bidding like crazy.
I have seen large cents that had toning you would expect of old copper, with a details grade and "old cleaning", so how come they can detect that?
Anyway, I am just curious about this.

 

Actually it is, or at least the result of the diffraction of light through a layer of material deposited on the coin through a reaction of the metal with other elements/compounds.

 

How embarrassing. Somerimes i think some people get special treatment. Hadta. Lots of proof blue raw coins out there. Shame shame

 

I hear ya. Like was said. 5 known proofs. Duh

 

God i hate when you make me change my mind. Sometimes i just want to scream when this happens

 

Doug just talked me down. Don't get me started. BUT. Great minds think alike

 

U got my best answer

 

Being always right is something we share.
It infuriates people.
I tell them its a genetic defect.

 

You didn't have to go and say that, Doug.

Great. Yet something else in coins for which I cannot get a third-party, definitive answer, but will have to rely on my own wits and my own choices!

Sounds too much like life...

 

Natural toning, as explained above, is a surface reaction between the metal and foreign contaminants. However, artificial toning such as the example shown in this thread really is adding a layer of something on the surface. Artificial toning usually isn't undergoing a reaction - it's often just adding some film on the surface exactly like paint.

The cleaning is almost impossible to see in the pictures that ddddd posted. However, click the link to the Heritage auction and look at the full slab pictures. The obverse of the coin is *covered* in fine, parallel scratches across her face and into the left field. That is due to the cleaning.