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Just think of it as a die crack occurs to the die and when it strikes the planchet it fills the crack and becomes raised on the planchet/coin. A lamination occurs to the planchet and has little if any effect on the die so after the strike it is still just an affected planchet which is the opposite of raised. I think it to be a very nice collector item.
Jim
A whole page of error coins came up. Nothing resembling this coin. I also searched lamination errors but nothing that is traveling diagonally in a straight line from one side of the coin to the other size. Please be more specific. Thank you.
I'm curious about how die cracks affect the value of coins. I bought a 1900-O Morgan with a visable die crack in the upper right quadrant (see without magnifacation). I don't feel that I paid a premium for it and can not seem to find anything about vaue in relation to mint defects (other than famous ones that are seperate entries in price guides). Is it simply a matter of a personal preference between 2 like graded coins? Or, is there some down-side that I'm just not aware of (yet)?
Die cracks typically to not affect the value of a coin. They can be interesting and are indicative of the die state to some extent (although it's possible for a die to have cracked during the manufacturing process). Only when die cracks develop into something more - a split die, sunken die, or major die break - does it tend to affect value. Coins with major features that resulted from die cracks might carry a modest premium from error collectors. Such premiums are not predictable, that's why there is not a reliable price structure for such coins.
Coins of Morgan dollar age and earlier very often show die cracks. Dies were tough to make and coinage demands often meant that a die would be used until it literally could not be use any more. Many coins of the early 19th century show dramatic die cracks, and many of these are even collected by die state.
As in the case of the 1893-S dollar that recently came up for sale, rare dates with mint errors can sell for less than one with no errors. On the other hand, common dates with errors usually command a premium (major cud, huge die crack, off-center, etc.)
I think die cracks make the coin unique because there are less of them.The mint seeks out defective dies and gets rid of them to prevent the die cracks from getting out into circulation even though many still make it out in the case of circulated coins. However, for proof coins they should be even more rare.Only a few million proof coins are struck which means there should be less die failure.About 100,000 coins are struck from proof dies before they are changed out, not the case for circulated coins about 200,000 is the norm.Therefore, it makes sense to assume less die failure will occur with proof coins.According to what Fred Weinberg told me at the Atlanta coin show the failure should occur near the end of the dies lifespan if it were going to happen at all. This makes sense to me. However, Ken Potter tells me some of the proof dies crack before even a single coin has been struck due to the annealing process.This also makes sense to me.
What the mint needs to do is inspect the dies more often to prevent these errors.If they inspected the die lets say every 5,000 coins struck then it would be reasonable to assume no more than 5,000 defective coins could ever make it out.
With todays technology it would be possible to check the die after every coin that has been struck by checking every coin that has been struck. A computer image of the die could be loaded into software and a quick scan of each coin could be compared to that software, if a crack appeared then the coins press would stop and it would be time to change the die.It would be a sad day for error collectors such as myself if this would occur.I hope they don't do this because I like the idea of collecting unique coins.
Die cracks are a cool and interesting part of the coin manufacturing process, but except to a specialist studying die-states, they generally don't add to the value of a coin. If the die cracks are particularly dramatic, then they might. There are some cases where a coin may actually suffer in value slightly due to die cracks, since that generally implies the coin may be a bit weaker in strike.
That's an example of a common and non-dramatic die-crack - one that is not worth a significant premium. Now if, for example, that die-crack extended all the way across the entire coin, like a bisecting die-crack, then it likely would be worth some kind of premium.
Or perhaps the mint was polishing the die at that time with a Wire brush and pieces of bristled got pressed into the dies while it was pounding out coins left an indention on coin making it look like a die crack ?
I am no metallurgist, but it seems more likely to me that an object that scratched the surface of the coin could skip over part of a numeral, than for a crack to appear in the center of the die, and spread almost completely across, but stop right before it reached the edge.
I am just some random guy who sometimes hangs out on a coin chat board, so if you don't agree with my opinion, no big deal. Mr, Lange, however, is a numismatic author, researcher, attributor, and authenticator. He is currently Research Director at NGC, and was named ANA Numismatist of the Year two years ago. He has also been awarded the association's Lifetime Achievement award. He knows more about coins than I ever will. If he says it is a scratch, he is not just guessing.
............Cherrypicked from a roll last night. At first I thought it was glue or a cut or scratch in the coin. An acetone bath revealed this. It almost looks like this die was ready to shatter. The metal is raised and extends into the rim. Not sure about the exact definition, RIDB? shattered Die, bisecting rim to rim? split die?........but I'm pretty sure it's all there.
I've roll-searched many of these small dollar coins. I haven't seen anything quite like this on these modern dollars. I've checked several sites. error-ref, Cuds-on-Coins, etc.. Unless I'm missing it, I haven't found anything close.
Flan cracks, from the edge of the coin, due to stress during striking, are very common on ancient coins. A flan crack that is open into a V-shape may be called a flan split. Flan cracks are least common on gold coins, due to the greater malleability of that metal, and most common on silver coins. For some types, flan cracks are rare and for other types almost every example will have multiple cracks.
Some flan cracks significantly detract from appearance and greatly reduce value, others are insignificant and don 't impact value at all. A flan crack on a type that is rarely cracked will have a larger impact on value than a crack on a type that is rarely cracked. Short small cracks usually have very little impact on value. Cracks that extend more than half way across a coin will almost always have a significant effect on value. A large wide flan split will have a larger impact on value than a small thin closed crack. A crack that protrudes deep into the coin and detracts from the design will have a larger impact on price than a crack that is only on the edge or in a field. A flan crack on an otherwise perfect coin will likely have a high impact on value, but a flan crack on a worn and otherwise unappealing coin may have little impact on value. The impact of a crack on price will mostly correspond to the diminished eye appeal resulting from the crack.
Flan cracks and splits usually do not indicate a coin is fragile or risk of breaking, but they may in the case of crystallized silver coins. If a coin is cracked, crystallized and fragile, reputable sellers will note the fragile condition in auction and sales listings.
A die defect is a unique and unintentional flaw in a coin die and is created through excessive use or polishing of the die.[1] A die bearing such a defect is occasionally referred to as a defective die. Generally, and depending upon the magnitude of the defect, coins that are produced from these dies are considered error coins.[2] Also, the term encompasses a wide variety of design errors that were engraved into the die originally and were slipped into circulation before the incorrect design was discovered.
A die crack occurs when a die, after being subjected to immense pressure during the minting process, cracks, causing a small gap in the die.[3] If this damaged die continues to produce coins, the metal will fill into the crack, thus revealing a raised line of metal in the finished coin. Specimens with more prominent die cracks can command a high premium and are valued greatly by some collectors.[4] However, less obvious errors are quite common, especially in the 50 States Commemorative Quarter Program, yielding a lower value.[5]
A cud on a coin is a damaged area resembling a blob at the edge of the coin. Cuds result from a piece of the perimeter of the die breaking away. They can be any shape depending on the shape of the piece that broke off the die. [6]
First, let us define the experiment mathematically. As usual, we will idealize the physical objects by assuming that the coin is a perfect circle with radius \(r\) and that the cracks between tiles are line segments. A natural way to describe the outcome of the experiment is to record the center of the coin relative to the center of the tile where the coin happens to fall. More precisely, we will construct coordinate axes so that the tile where the coin falls occupies the square \( S = \left[ -\frac12, \frac12 \right]^2 \).
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