It looks authentic. It should weigh 2.28 grams and the copper core should be visible on the edge. Most such errors are struck on blanks, rather...
It's a slightly misaligned die in concert with planchet that was inadequately upset. Combine that with the excessive convexity of the obverse die...
It looks like a stain.
The quarter seems to have a "die erosion" patch. These sometimes develop in late die states. They're called "patches" or "blebs". They're not...
Die gouges, most likely. Typical polishing lines are not so prominent, isolated, or uniform in their directionality. Instead they are fine,...
It's large enough to be considered an interior die break. It's not a cud, though. Cuds must meet the rim. It's probably worth around $10.
I doubt you own it because it's a 2007-P dime, not a 2001-D dime. Your photo was ripped off from Fred's site:...
I've seen over half a dozen dimes struck by this shattered die. There are four die stages. There are three other shattered dies among 2007-P...
Shattered obverse die incorporating a 50% retained cud, an interior die break, and lots of die cracks. Rockdude's dime represents an earlier...
There is absolutely no sign of damage to this die.
The die undergoes deformation. The area just inside the die's rim gutter sinks in.
It's a form of die deterioration that's almost exclusively associated with zinc cents.
Here's my problem. Forty coins were 2.627 grams and 9 weighed 2.633 grams. That level of precision -- down to the nearest 1/1000 of a gram --...
Condor101 is correct in all his observations and conclusions. The design in 1978 dimes is very close to the edge of the coin.
Your statement makes no sense. There's no such numismatic term as "parchment" and the thinness of a planchet has no bearing on how well copper...
Something would appear to be amiss. Perhaps your calibration weight was, itself, improperly calibrated. It's highly unlikely that a single roll...
I've consulted the US Mint's website and they will indeed make some special-issue cents of 95% copper alloy. Here's what it says: "These coins...
So you tested a reasonably large sample of recent (post-1982) cents and they came out to 2.5 grams (+/- .1g)?
You might want to check the accuracy of your scale.
95% copper cents were last produced in 1982. Since the middle of 1982 cents have been composed of copper-plated zinc.
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