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 Replies: 20 / Views: 1,426 |
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Valued Member
United States
73 Posts |
This Lincoln Memorial cent has been sitting in my coin box since somewhere between 1960 to 1975. I'm just getting them out to see what I have. My mother found it in circulation while she was working at a local bank. I just read in the Red Book that coins made 1959-1962 contained 0.050% combined tin and zinc with the balance being copper. Coins made 1962 to 1982 contain 0.050% zinc only, no tin specified. The business I retired from in 2022 electroplates copper alloy wire and has an X-ray Fluorescence (XRF) measuring machine. It has the ability to analyze alloy composition to a degree. I plan on taking my coin down there next week to see if I can determine if it has any tin in it. That will narrow down the date somewhat. I am assuming that since the Reverse of the cent if perfect is the Memorial side, that that will still remain the reverse on a Brockage error coin when both sides have the Memorial. Obverse:  Reverse:  |
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Pillar of the Community
United States
2731 Posts |
Whats the weight?
Looks like a copper split planchet.
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Valued Member
 United States
73 Posts |
CoinHi
I have not seen how to quote posts yet. Could you explain the split planchet and how it could occur?
This coin weighs 1.334 grams and it is 0.0257 to 0.0264" thick. (0.653- 0.671 mm thick) There is a raised ragged edge around the Obverse side.
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Moderator
 United States
95443 Posts |
sure looks like a split planchet, and confirmed by the extreme light weight of it.
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Bedrock of the Community
United States
73945 Posts |
Great error coin.  Errers and Varietys.
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Valued Member
United States
73 Posts |
What is the error? The planchet was too thin before it got struck? How could that happen? I worked at a company that rolled both round and square edge flat wire and I've never seen wire split into two halves.
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Bedrock of the Community
United States
10504 Posts |
Edited by Marv65
08/09/2025 9:08 pm
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Pillar of the Community
United States
2731 Posts |
It was a defective but intact planchet that split after being struck. There was an obverse half to this coin at some point, or maybe still is, floating around somewhere.  |
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Valued Member
United States
73 Posts |
Thanks Marve65. I read both links and I did other reading by searching for split planchet on this site. I'll have to get out my microscope next week and take a closer look at the surface of this coin. Want to see those striations. My photo was not the best. Had a hard time focusing since my setup was too flimsy and shaky.
I have seen wire breaks caused by internal inclusions. Coins are made out of strip, which is out of my sphere. My old companies widest round edge flat wire is close to 0.375", but then it is very thin, like 0.005" thick. It started out round.
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Pillar of the Community
United States
2731 Posts |
Correction: I believe this is a uniface struck split planchet where the split planchet and a regular planchet where struck together.
That explains the smooth texture of the unstruck side.
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Pillar of the Community
United States
2731 Posts |
Sorry for the spam but here's a link to an older post describing a similar coin- https://goccf.com/t/418765&SearchTe...plit,unifaceNote that this could have been a split or rolled thin planchet. If it was split the striated side could have been die struck and smoothed it out. "Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Valued Member
United States
73 Posts |
CoinHI, what spam? I've been grateful for all you've written.
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Bedrock of the Community
United States
19144 Posts |
Personally, fried spam is quite good for breakfast on a cold fall morning in a Wyoming forest...
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Pillar of the Community
United States
2842 Posts |
Very nice error. |
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Valued Member
United States
73 Posts |
So, a brockage error is where a struck coin sticks to one of the dies and strikes the next planchet coming through, correct? The weight of the brockage error is within the tolerance for a correctly struck coin. Correct?
This explains why my coin does not show the brockage error. Correct?
My coin should show a reversed image of the reverse if it is a splint planchet. Correct? Its hard for me to make out what it looks like from the photo. I have to get out my microscope to look, but I don't have any way to make a microphotograph here. Maybe I could at my old place of work-I'll have to ask.
Edited by jerrytheplater
08/11/2025 11:28 am
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Moderator
United States
188110 Posts |
Nice example! |
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Replies: 20 / Views: 1,426 |
Posted 08/09/2025 7:02 pm
