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 Replies: 17 / Views: 3,583 |
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Pillar of the Community
2145 Posts |
Strange - one more for discussion - not shoot the messenger....... Obverse weak but on Reverse both outsides of the Memorial stuck strong .........Ideas?
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Pillar of the Community
United States
5240 Posts |
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Pillar of the Community
United States
2775 Posts |
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Pillar of the Community
 United States
7516 Posts |
Thanks everyone, yes there are similarities between this and the other one,this one with a little stronger strike on reverse and a bit heavier at 1.8g. Seller's pics didn't quite demonstrate the true nature of the errors but I had a hunch what they might be , so I took a chance and sure glad I did, they're pretty neat.
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Pillar of the Community
United States
4963 Posts |
Quote:
Strange - one more for discussion - not shoot the messenger....... Obverse weak but on Reverse both outsides of the Memorial stuck strong .........Ideas? My best guess: The obverse is struck in much higher relief. It doesn't take as much pressure to fill the memorial, which is achieved wherever it's backed by the obverse field. |
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Bedrock of the Community
United States
62064 Posts |
I'm in the post strike lamination peel on the reverse devices, but a pre strike planchet split before the strike. Thus the weakness of the memorial, because it peeled later, on some areas. So I feel it is a before split and after lamination peel.
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Pillar of the Community
United States
6116 Posts |
Pair of nice splits you got, well done!
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Pillar of the Community
United States
3281 Posts |
Quite a spectacular coin!
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Pillar of the Community
United States
7516 Posts |
Thank you everyone, your input is much appreciated.
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Pillar of the Community
United States
4963 Posts |
Quote:
So I feel it is a before split and after lamination peel. I'm with you on the pre-strike split, but could you please explain how a lamination peel factors in? It looks to me like a straight-up split planchet that wasn't struck up where there wasn't enough pressure (i.e. behind the obverse devices where more metal is required to fill the die). Just trying to understand what happened. |
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Pillar of the Community
United States
5887 Posts |
Very cool find! Looks to me like split before strike. Both examples you found are very nice!
-CH27
Collector of U.S. Coins, Varieties, and Colonial Coinage
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Bedrock of the Community
United States
62064 Posts |
The split planchet is caused on the cold rolling of the stock material. Imagine you are making noodles and a piece of the dough gets separated, and you later roll it back into the dough. If there was added flour on the piece being re-attached to the dough, it will not stick to the lump. Well on cold roll metal, the same thing happens, it is rolled in to the metal, but because it was not hot, it doesn't attach to the roll that was hot rolled. So this piece will be long because it was rolled on the metal. But when the roll is but with the blanking process, the lamination/adhered in cold metal, will be flat, but will not stay attached to the hot rolled steel. So during the blanking/upset process to turn it into a planchet, the metal breaks away. After the strike some of the lamination falls away and those blank areas on we are seeing had the metal fall off after the strike. Thus the bald areas on the reverse. That is what I feel happened to this coin. Split pre-strike and the missing lamination happen after the strike. I can't think of any other way these areas would be bald looking?
Edited by coop
04/13/2021 12:04 pm
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Pillar of the Community
United States
4963 Posts |
Here's a crude illustration of my interpretation:  |
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Pillar of the Community
United States
7516 Posts |
Numisma,
Thank you for an excellent demonstration, impressive.
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Bedrock of the Community
United States
62064 Posts |
So it may have been more of a case with the lack of planchet thickness, the bust received more of the metal? I can see that.
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Replies: 17 / Views: 3,583 |
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First Page
Posted 04/12/2021 9:24 pm
