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There are a total of 14 test marks (13 on obverse + 1 on reverse) as shown in photos. Judging from the many marks present with 3 on the rim on the obverse side, It appears that a piece of coil, which was used to practice Rockwell testing, was somehow put through the blanking process and then the blank with these marks was put through the complete minting process. The marks have various shapes; hemispherical, oval, truncated oval (due to metal in-flow), in various sizes (indicative of different test forces applied). Descriptions of Rockwell test marks on Lincoln penny in an CONECA article by Pete Apple seem consistent with what are found here.
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Last edited by Francis; 12-30-2023, 04:03 PM. -
That looks more like the cent I use as a target for my Red Rider BB gun. That’s PSD “Post Strike Damage”, not an error. It did not come from the mint in that condition.
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Agreed. Post mint damage. 99.999% of the Rockwell hardness tests are destroyed. Most of the marks are on the side of the die, so the hardness marks cannot be seen.Gary Kozera
Website: https://MintErrors.orgComment
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Please read Mr. Peter Apples' CONECA article on Rockwell Test Marks on Lincoln penny. He explained BB gun can't produce marks like those shown in the photos. If you know him, please ask him what he thinks.Comment
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The coin shown here was among a bag of wheat pennies acquired from GovMint.Com about 3 years ago, when I got interested in Numismatics. When I saw it, I thought someone messed it pretty badly and set it away. It could have been thrown away. Recently, while checking through old coins, I found it again. Curious, I examined it carefully this time, and realized that those features can't be manually made in a penny. This led to the conclusion that the holes must have been present in the penchant before the striking process. Further study led to Rockwell Hardness Testing and Pete Apple's article. And I understood how the marks could have been produced and posted here in this Forum.Comment
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.. on your first pic farthest from the date you can see misplaced upturned metal... pic 2 shows upturned misplaced metal in hole above the date...pic 3 shows it at the rim moving metal outside of the round of the coin.... the last pic shows moved metal and lettering smashed..... IF this was done to the planchet before the strike.... there would be no misplaced metal, upturned metal, and the collar would keep all metal inside of the round of the coin.... This is Post Mint Damage.....Originally posted by Francis View Post
CONECA Attributer: John MillerComment
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To onecent1909: If the marks were placed in a penny, please explain how could these marks be manually placed in the minted penny. What you explained in your comments was exactly the results of die striking on a planchet which contained the circular indentations produced by Rockwell hardness testing.Last edited by Francis; 12-31-2023, 03:02 PM.Comment
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In my opinion, you really think that the mint would release something like this? And if so, no one else plucked this circulated coin a long time ago ? Rockwell tests are one usually one test, not a handful. Rockwell tests are typically done in a lab, and the results recorded and the specimens are destroyed..
These marks are different why are they different, it they came from the same machine, more than likely from the same time period. I cannot believe this is what it is, I've never seen a Rockwell test like this in over 50 years of collecting coins.
You are entitled to your opinion and beliefs. If you feel so confident about this, you might consider sending it in to a third party grading service. They will send it to an expert and they will give you their opinion. It may cost upwards of $50 to $75 or more to find out for sure, but in its current condition, it will probably be returned In a plastic "body bag" with the verbiage something like "damaged" and ungradeable.
Gary Kozera
Website: https://MintErrors.orgComment
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To Mr. Kozera: I know that the Rockwell testing is normally performed on a planchet and that, afterwards, the planchet is discarded. That's why I thought that someone practiced the testing in a lab on a piece of coil, which was accidentally put into blanking machine, producing the planchet of this coin. Otherwise those marks on the rim could not be explained.Comment
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Wow. Interesting I have a 1911 wheat with one round dimple that covers half of one of the ones or was it a 1918. Well im going to dig it out if I still have it. I may have spent it yesterday when i paid for a pack of cigs with my jar of checked wheat pennys.
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Ya its gone
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To 279773: Sorry that you couldn't find it. I was hoping to see what you have in that coin. Hope you find a coin with a Rockwell test mark someday.Comment
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Excuse me but you are not right, you are relying on physics, and you are contradicting it.Originally posted by Francis View PostComment
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To Ariel Cabrera: What do you mean? Please be more specific.Comment
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