Strange 92-D

[Arjohn]

I'd love to show a picture but cant figure out how to get it here.... I has no url it is in my album here:~

http://www.lincolncentresource.net/forums/picture.php?albumid=574&pictureid=6967

[jallengomez]

Looks like Tester's Gun Metal Grey paint to me.

[simonm]

Added the pics for you. Here is a message from the FAQ on how to attach photos.


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And your coin looks like post-mint damage in my opinion.

[GrumpyEd]

Looks like Tester's Gun Metal Grey paint to me.

Yes it does look like paint.
Try some soaking in acetone and it may come off.

[Arjohn]

Thank you for the picture help.... The damage is not on the copper. The copper is missing. You can see the edges of the plating. Paint or some substance on it is not the answer. If you look above Lincoln's ear there is a small dot of copper. Around the letters etc -- the copper is ok but like it was over stretched and did not cover the zinc around the letter(s).... The copper isn't worn off as there is no wear on the coin....

[seal006]

The reason you see copper specks in various places is because those are the high points. Look how there is no discoloration in the date. This is a foreign substance on the coin, perhaps paint as first suggested. The paint has rubbed off on the high points of the coin.

[GrumpyEd]

I don't see any way that the plating can be on the date but not around it other than it was silver paint.
Or possibly some sort of acid was dropped in the center that took off the copper.

It does not look like a mint error, it looks like something post mint.

[jcuve]

I agree, it is either a case of some thin substance being attached to the surface, worn off of the high points later, or something corrosive getting onto the plating and damaging the lower points. It does not look like a genuine partially plated copper cent. We have some info here: http://error-ref.com/Incomplete_plating.html - which reminds me I should add some detail shots of an example I have of the edge of the plating on the exposed zinc.

[coppercoins]

Acetone. If it's paint, it will rub off. If it's missing plating nothing will happen.

I'm positive it's paint, but it looks like the OP is resistant to the truth - time to prove it to himself.

[Arjohn]

You guys have been great -- spurring me on for more info. I have a 60X loupe and can see that the copper is definitely on top of the grey (let's call it zinc) -- but that does sound like some sort of acid except that the detail of Lincolon's face is so clear (which BTW would be obscured by paint on top as well). I am open to an acid that would dissolve copper but not damage zinc. I know the other way around but not that way. So I nosed around and found this: http://www.error-ref.com/Partially_Plated_.html It seems it does happen from time to time. Note in particular the bottom right pic. That is is how the edges of the copper/zinc areas look. The big problem is that the un-plated area is essentially in the middle (both O and R) of the coin... These show mostly edges, halves etc... I may have to take this in for a better look by another party....

[Maineman750]

Try soaking it in acetone as mentioned. Acetone will not harm your coin and will at least prove/disprove the paint theory.I use acetone on almost every BU find just to avoid fingerprints.

[seal006]

You guys have been great -- spurring me on for more info. I have a 60X loupe and can see that the copper is definitely on top of the grey (let's call it zinc) -- but that does sound like some sort of acid except that the detail of Lincolon's face is so clear (which BTW would be obscured by paint on top as well). I am open to an acid that would dissolve copper but not damage zinc. I know the other way around but not that way. So I nosed around and found this: http://www.error-ref.com/Partially_Plated_.html It seems it does happen from time to time. Note in particular the bottom right pic. That is is how the edges of the copper/zinc areas look. The big problem is that the un-plated area is essentially in the middle (both O and R) of the coin... These show mostly edges, halves etc... I may have to take this in for a better look by another party....

Or you could just do as so many of experienced members have suggested, use acetone and clean it right up.

[jcuve]

So you're saying it has detail similar to my image attached? I just don't see how the plating could be present on top of ERTY or 199 and not in the fields. Nor do I understand the flat appearance to the gray areas. Plating happens before the coin is struck.

Not seeing it in person, I am not sure what else to add...

[cimperialis]

I may have to take this in for a better look by another party....

I can assure you you're not going to find another group who knows better. I know you're new, but these people here have written the books on this sort of thing. There's no one else. It's a simple paint job, or some other chemical.

[cimperialis]

So I nosed around and found this: http://www.error-ref.com/Partially_Plated_.html

And you do realize that one of the contributors of that website is here now telling you it's not a partially plated cent, right?

[Arjohn]

Sounds like acetate is the next step...

[Arjohn]

I gave the coin a good cleaning. Even soaked in acetone for a good while, figuring any paint on there could be 20 years old. It cleaned up pretty good. Now, looking at it -- the copper IS gone -- but with all the splatter (look to the right of LIBERTY along Lincoln's bead-line from ear to chin) I am suspecting acid (nitric as it affects copper but not zinc much?). Unless teh copper goes molten at stamping and the "sheet" was really really thin or something, it would explain the high edges still copper and the low areas zinc. Probable scenario -- an eye dropper of acid to the center and there fore complete removal (except for the little beads of build up) Then gradual spreading preserving the high letters but not the valleys, including the edge of the president's shoulder -- but not the actual sholder.... My conclusion -- acid... Front and back... Most likely nitric acid
Thank you all for your help with this -- far too easy to jump to conclusions... I think I'll keep it as a conversation piece

[GrumpyEd]

Sometimes the main thing to determine is if it was an error or if it was damaged.
Since nothing done at the mint would cause plating only on high areas that sort of rules out any error.
Even though the pics look like paint, acid was my second thought. Sometimes pics can be confusing and looking in hand is better.