1989 P Dime Struck Through Error - Coin Community Forum

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Author	Replies: 6 / Views: 6,599
jasper62 Pillar of the Community United States 2189 Posts	Posted 01/26/2010 10:30 pm It looks like a piece of the Rim broke off and was Struck into the coin.I'm pretty sure this is what happened but not Sure how it could have happened.I'm thinking this is struck through a foreign object and the object is still in place.You're thoughts appreciated Report this Post to the Staff

mikediamond Pillar of the Community United States 2734 Posts	Posted 01/27/2010 09:04 am This is called a struck-in rim burr. It's a form of pre-strike damage. Most are probably caused by the feeder finger, but other machine parts can be involved. Error coin writer and researcher. Report this Post to the Staff
jasper62 Pillar of the Community United States 2189 Posts	Posted 01/27/2010 10:30 pm Thanks Mr Diamond for confirming my thoughts on this particular error.I've never seen one quite like this.I believe its definitely a Keeper Report this Post to the Staff
aladinslamp Pillar of the Community United States 3076 Posts	Posted 01/28/2010 12:03 am very interesting comment, basically a machine error...typically not mentioned unless ie...strike doubling.....there are many errors due to machine effects....which in general are not DIE ORIENTATED.............hence.....not valued.....yet......something like denticles are the rage!! Report this Post to the Staff
zeewool Pillar of the Community 3660 Posts	Posted 01/28/2010 04:36 am Yes, I agree with Mike's assessment of nomenclature; pre-strike damage, however, I believe that the cause was trifold or maybe even more. The original metal strip (or roll) most likely had a flaw (crack) that was propagated to a sliver by the cutting of the planchet (in the crack), then this rim sliver remained connected and was raised during upsetting, then finally smashed down by strike. The 'feeder finger' would not have done this. Report this Post to the Staff
mikediamond Pillar of the Community United States 2734 Posts	Posted 01/29/2010 9:22 pm I was once sent a group of SBA dollars struck by the same die pair. The struck-in rim burr was in the same spot in each coin. That indicates damage immediately before the strike. I have inspected dozens of such errors and there is never any indication of a planchet flaw pre-disposing the coin to later damage. Instead, the edge and the rim usually show damage where the metal was scraped up by the machine part responsible for the error. Error coin writer and researcher. Report this Post to the Staff
zeewool Pillar of the Community 3660 Posts	Posted 01/30/2010 01:52 am Hmmm....That is highly interesting, and certainly blows my imaginative theory away. Why would the same condition on several coins in the same spot indicate damage 'immediately before' strike? I would think that this could indicate damage caused 'by' strike. I cannot imagine a cause for it either way though. I would imagine that the particular type of press used would be a factor in making such a determination. Do you have a clear theory on it? Report this Post to the Staff
	Replies: 6 / Views: 6,599

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