Generally, rotated die errors are measured in degrees of deviation from perfect coin rotation. By convention, reverse rotation is measured...
Rotated die errors are just that -- errors. Both the anvil die and the hammer die are subject to such errors. A rotated die results from at...
Yes, this is what happened. As far as value goes, an uncirculated example should be worth around $125. Yours appears to have experienced...
This quarter was struck through a detached clad layer. A desirable error.
Invasive tests are not for everyone. But I've found them useful over the years to detect anomalous compositions and reject claims of nonstandard...
Color is a very unreliable diagnostic. Given the right chemical environment, you can turn a cent almost any color imaginable. If weight and...
If your scale is accurate only to the nearest gram, then the weight matches expectations. The fact that the quarter has a "ring" is strong...
If it's a genuine 180 degree rotated die error, then it would be worth at least $300 in uncirculated condition. You don't need to send it to a...
This is not an off-center strike. It is a minor horizontal misalignment of the obverse (hammer) die. Minor misalignments are quite common.
These seem to fetch between $10 and $20 on eBay.
It's die deterioration doubling, not mechanical doubling. In either case, it's common and carries no premium.
It's most likely a capped die strike, although a heavy grease strike is also possible. It's not an in-collar uniface strike because you've got...
"Ram strikes" are not that common, but neither is there much demand for them. I'd say you paid an appropriate price for it.
Not quite, but close. This coin was slightly off-center when it was struck. The collar against which it was struck was frozen in the "up"...
It's a "squeeze job", not an error. Two shillings were pressed into the surface of this penny. A hammer or a vise will do the trick.
I've seen this form of doubling on many copper-plated zinc cents. It is incuse doubling, which distinguishes it from typical machine doubling. I...
The term "capped die error" is uninformative as it pertains to both die caps and capped die strikes. This cent is a capped die strike. The coin...
It looks like both faces have been buffed down. It's not natural wear and it's not a weak strike. The convex edge and abnormally small diameter...
It's either that or die deterioration doubling (or a combination of the two).
Looks like they're drops of solder.
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