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1929 P LWC Incused Date, Motto And Epu. Chemical? Environmental?

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Jim0815's Avatar
United States
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 Posted 06/02/2019  6:58 pm Show Profile   Bookmark this topic Add Jim0815 to your friends list Get a Link to this Message Number of Subscribers
I found this strange 1929 P LWC with incused numbers and letters. I know they are incused as you can see the raised insides of the B in LIBERTY and Pluribus on the reverse as well as the raised insides of the R in PLURIBUS. I am 100% sure that this is PSD, I just don't know what caused it. The bust and ONE CENT as well as USOA is raised. Pretty cool when you see it in hand.
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
Edited by Jim0815
06/02/2019 11:36 pm
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Errers and Varietys's Avatar
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 Posted 06/02/2019  6:59 pm  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Probably a combination of all factors from Post Strike Damage ( PSD).
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Coinfrog's Avatar
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 Posted 06/02/2019  7:09 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
All of these letters and numbers are incused? I don't see how that could be.
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Jim0815's Avatar
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 Posted 06/02/2019  8:09 pm  Show Profile   Bookmark this reply Add Jim0815 to your friends list Get a Link to this Reply
Everything but the bust, ONE CENT, USOA and the wheat stalks.
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ty88ty2's Avatar
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772 Posts
 Posted 06/02/2019  8:42 pm  Show Profile   Bookmark this reply Add ty88ty2 to your friends list Get a Link to this Reply
I think it is just lighting and a combination of the events that led to its state that make it look incuse. Try take a toothpick over the lettering for confirmation, not going to hurt the value of this one.
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Jim0815's Avatar
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 Posted 06/02/2019  9:05 pm  Show Profile   Bookmark this reply Add Jim0815 to your friends list Get a Link to this Reply
It's not lighting. And yes, they are incused. Do I believe this left the mint this way? Absolutely not, it is PSD. I just would like some insight. A toothpick would do no good. You use a toothpick on zinc cents to check plating bubbles, this cent is copper.
Edited by Jim0815
06/02/2019 9:12 pm
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Coinfrog's Avatar
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 Posted 06/02/2019  9:13 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
If the numerals and letters are actually below the surface of the coin, then I have no clue whatsoever.
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Jim0815's Avatar
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 Posted 06/02/2019  9:21 pm  Show Profile   Bookmark this reply Add Jim0815 to your friends list Get a Link to this Reply
They are Coinfrog, how or why I have no clue. My first thought was heat but it is the same thickness as any other coin. Then I thought acid, but if it were acid then ONE CENT and USOA would be affected which are not. Maybe it was the combination of the two?
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Petespockets55's Avatar
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 Posted 06/02/2019  9:33 pm  Show Profile   Bookmark this reply Add Petespockets55 to your friends list Get a Link to this Reply
All I can think of is a coating had been applied to the surface somehow, either intentionally or accidentally. The higher points of the affected devices got ground/sanded off and a caustic substance finished up with the effect you are seeing by dissolving the exposed copper? The coating could have protected the areas not sanded down from corrosion.
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spru's Avatar
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 Posted 06/03/2019  02:39 am  Show Profile   Check spru's eBay Listings Bookmark this reply Add spru to your friends list Get a Link to this Reply
There is simply no logical explanation for how some devices that would normally be in relief are suddenly incuse on this without major distortion. I believe you are missing something on this, Jim.

Can you take an angled closeup of LIBERTY to show that it is not raised? Also, make sure there are no foreign substances on the coin that may create a higher-than-normal "field."
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Jim0815's Avatar
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 Posted 06/03/2019  2:09 pm  Show Profile   Bookmark this reply Add Jim0815 to your friends list Get a Link to this Reply
@spruett001, These are the best that I could do to show the incused lettering. I also took a couple of pics of ST in the word TRUST. Stumped. Also, the cent weighs 2.86 grams. There has to be an explanation for this other than PSD. What caused it?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
1929-P-LWC-Incused-Date,-Motto-And-Epu.-Chemical?-Environmental?
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Coinfrog's Avatar
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 Posted 06/03/2019  2:19 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
@coop - What say you?
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Jim0815's Avatar
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 Posted 06/03/2019  3:02 pm  Show Profile   Bookmark this reply Add Jim0815 to your friends list Get a Link to this Reply
@Coinfrog, I'm sure coop has seen it and may be stumped like the rest of us. I emailed Mike Diamond all of the pics to get his insight. Again, I am absolutely sure it didn't leave the mint this way as I have never seen incuse letters on a cent before. The only way it left the mint this way is maybe a die mistake but I think that to be HIGHLY UNLIKELY. I am like a few of us, stumped. I agree with spruett001, there may be no logical explanation for this for why some elements are raised and some are incuse and just keep it as a curiosity.
Edited by Jim0815
06/03/2019 3:03 pm
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stoneman227's Avatar
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 Posted 06/03/2019  3:32 pm  Show Profile   Bookmark this reply Add stoneman227 to your friends list Get a Link to this Reply
Your coin was acid dipped. The bright smooth areas around the devices would be spots where skin oils and dust would have originally collected and formed a grease. This grease would have preserved the original coin surface from the acid but the unprotected devices were acid etched low.
Then , as the grease disappears from cleaning or wear you are left with devices that are acid recessed below the original coins field.
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llewellin's Avatar
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1005 Posts
 Posted 06/03/2019  3:40 pm  Show Profile   Bookmark this reply Add llewellin to your friends list Get a Link to this Reply
Agree this can be caused by acid etching and pitting of the coin.
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Jim0815's Avatar
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 Posted 06/03/2019  3:53 pm  Show Profile   Bookmark this reply Add Jim0815 to your friends list Get a Link to this Reply
stoneman, that makes perfect sense. But why only the outside devises and not the interior devises? They actually are either the same height or a smidge lower than the outside devises.
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