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What's wrong with this picture? 1921 Peace Dollar

This coin is in an NGC Details slab. **Not my coin, not my pictures.** I'm posting this as a learning exercise for myself (and maybe others). I have a theory as to how NGC arrived at their conclusion, but I'm not positive. I figure that posting only the information I have here may lead to some discussion that will be illuminating for me. Here are the pics:



"YOU SUCK!" Awarded by nankraut/renomedphys 6/13/13 - MadMarty dissents
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Erik
Hard to tell anything (unless there was obvious harsh cleaning) from pictures like this.
There may be a small area such as in front of her nose that was lightly scrubbed at one time, who knows.
-Ron
(edited for spelling/grammer)
<< <i>...the slab.
Spank
PCGS Registries
Box of 20
SeaEagleCoins: 11/14/54-4/5/12. Miss you Larry!
<< <i>You can't grade from photos, but it looks like a decent AU to me. >>
I agree. No luster is present in those pics.
<< <i>Here's what I was thinking: it's a dip gone bad. That mark above "IN GOD..." looks like liquid flow to me. I'm guessing that the coin had some relatively heavy grime on it and the owner decided to dip it. After doing so, not only did he/she neglect to rinse the coin, but also didn't even bother to pat the dark stuff off with a soft cloth. What say you, folks? >>
It might have been cleaned with a baking soda solution decades ago as the reverse has that kind of look.
I don't believe this example has been dipped as the crust on this isn't non-properly dip residue that's turned.
Reverse cleaned the old fashioned way, with friction.
Possible: Chemically treated silver polishing cloths are abundant and when you lightly polish a silver coin between your thumb and fingers, it will only remove the tarnish on the high portions of the design. To bad, in it's current state it would also probably be rejected by our host.
Very hard to detect in images, but in the right conditions something does not look right to the graders, so it goes into the reject bin.
"Keep your malarkey filter in good operating order" -Walter Breen
The second thing to be learned is that no two groups of graders can agree on anything. Crack Outs and resubmissions prove this out.
The name is LEE!
<< <i>Not dipped.
Reverse cleaned the old fashioned way, with friction. >>
Looking at it now, I can clearly see what you mean. Given this statement, do you believe the obverse is un-fooled with?
<< <i>The first thing to be learned is that sometimes its impossible to tell or determine anything from a photograph. >>
While I agree with this statement at face value, we all know that interacting on forums such as these, and for many of us purchasing coins, requires judging quality by pics. That's why I like to give it a shot. I'm definitely better at judging a coin from a photo now than I was back when I started. The fact that I have improved suggests to me that there is a certain skill to it.
<< <i>...the slab.
Erik >>
THAT is uncalled for.
Purely anecdotal: I saw an AT proof Morgan with a totally covered but by no means obscured staple scratch. Coin was called "scratched". Many like this abound.