It's just environmental exposure that caused the nickel to darken. The composition of a war nickel is 35% silver, 56% copper and 9% Manganese (A...
It depends if it's stable or spreading. There are lots of things that could cause a green buildup and there is no "one size fits all" solution....
Agree with @paddyman98 . A broad strike is struck without a collar. Your coin shows reeding on the edge, so it can't be a broad strike....
I pulled about 20 from circulation when they initially came out
That's incorrect. Partial Collar errors are also known as railroad rims. A collar clash is a different error. Here is some info that explains...
You could always try to do a date/mint set of Silber Groschens. I have about half of them from 1821-1873 (Friedrich Wilhelm III, Friedrich...
Per error-ref, design creep is a very specific form of die deterioration and the editors refer to it as rare. It is not the same as the die...
The Zinc core melts at 420C/787F, so it's unlikely that you could get it hot enough to significantly affect the color of the copper plating....
Error-ref is a good resource https://www.error-ref.com/lathe_rings_on_a_1996-d_lincoln_cent/
Looks like fire damage or high heat. Cracks are damage related, not a mint error
San Francisco used to send rejected proof planchets to Denver to be coined as business strikes. Some 40% silver planchets from the bicentennial...
What you learned was * you need to do more research before spending the money to have to your coins attributed * you cannot have have an over mint...
The only way to prove it and be able v to sell it, is to have it authenticated by a TPG such as PCGS or NGC. It will cost about $60 or more....
Years ago in the pre-internet dark ages, a dealer who used to run frequent back cover ads in Coin World and Numismatic news sold these as under...
While I always check my change and still enjoy finding something old, I spend any common wheat cents and 40s-50s Nickels I get. My kids never...
Both are struck fromworn dies. You can see the radial flow lines, especially on the 94. The 85 also has a scratch, possibly from a coin rolling...
The curved area is just corrosion/verdigris. Your coin has environmental damage and didn't leave the mint like that
It looks raised in your pics, so it can't be a strike through. More like Feeder finger damage or some other type of die damage, IMO.
@john65999 This thread is for currency, as it it's in the paper money forum. You may want to post this in one of the other forums geared for...
Die chips on the reverse seem to be relatively common on the ATB quarters. I would image that they can be found on the salt river quarter as well
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