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1971 S LMC That Weights 2.6 G

 
 
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United States
55 Posts
 Posted 09/16/2019  3:03 pm Show Profile   Bookmark this topic Add 1369 to your friends list Get a Link to this Message


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 Posted 09/16/2019  3:18 pm  Show Profile   Check Yokozuna's eBay Listings Bookmark this reply Add Yokozuna to your friends list Get a Link to this Reply
Hello, 1369.

Pictures aren't the best for determining what's happened, but the weak surfaces look like acid damage or corrosion. It could have been buried at one time and then cleaned. This would account for the coin being under weight as well. I think it's only Post Strike Damage.
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All the way to Baltimore and running out of time" - Tom Waits 'Clap Hands'

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United States
17440 Posts
 Posted 09/16/2019  5:22 pm  Show Profile   Bookmark this reply Add moxking to your friends list Get a Link to this Reply
Porosity is from acid or simple corrosion. My best acid.

If you don't metal detect please refrain from thinking every strange thing is from burial. It's almost always NOT the case.
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 Posted 09/17/2019  11:15 am  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply
Looks like an acid soaking.
Gary Schmidt
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United States
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 Posted 09/17/2019  2:11 pm  Show Profile   Bookmark this reply Add 1369 to your friends list Get a Link to this Reply
I got several coins so worn the lettering &date is not even legible, way more ware than the 71, and all weigh at least 3 grams?
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 Posted 09/17/2019  3:29 pm  Show Profile   Check Errers and Varietys's eBay Listings Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Definitely acid dipped. Weight is way off. Normal weight is 3.1 grams. PSD, and not an error coin.
More information about Die Deterioration? http://goccf.com/t/317950
Retired U.S. Mint Coin Die Set information. http://goccf.com/t/302961
Machine Doubling Tutorial. http://goccf.com/t/332421
Die states progression on coins. Scroll down, so you can see the different die state progressions. http://goccf.com/t/325638
Die Deterioration Doubling Tutorial. http://goccf.com/t/336470
Split Plate Doubling Tutorial. http://goccf.com/t/357614
2000 P LMC With Retained Struck Through error. http://goccf.com/t/357080
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United States
15832 Posts
 Posted 09/18/2019  09:57 am  Show Profile   Bookmark this reply Add Conder101 to your friends list Get a Link to this Reply

Quote:
I got several coins so worn the lettering &date is not even legible, way more ware than the 71, and all weigh at least 3 grams?

Wear removes the high point details, and yes you can wear away a lot of the details and still be within the weight tolerance. Acid soaking though attacks all surfaces roughly and the coin can be reduced to near paper thinness and still have most all its details. One key indicator on you coin are the rims. Since the acid attacks all surfaces that includes the edge reducing the diameter of the coin. The result is that as the acid works the rim gets thinner and thinner.
Gary Schmidt
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