Environmental damage. Maybe heat related. The melting point of zinc is only 787F/420C. You can easily melt a zincoln in the flame of your gas...
Compare your coin to those listed on Wexlers www.doubleddie.com. He also gives some die markers, so if the mm matches his pics, the die markers...
I wonder if someone is messing with the seller and will cancel the bid or SNAD it.
Sorry, but your coin doesn't look like the Wexler's 2019-D DDO-001. Since the doubling is to the die, all of the DDO-001 will look the same....
Could it be residue from whatever organic was dissolved and then redeposited if the acetone evaporated without being thoroughly rinsed?
Looks like a collapsed plating blister or possibly some zinc rot. Doesn't look like a retained strike through
@Rachel Perez This thread is about a 1979 Cent. Many members have probably already viewed it and may not bother to open it again. How is...
Rev A says there is a diagonal crack from the first S in STATES. But the lines on the shield don't seem to merge. Can't see some of the other...
The 79-D is cool but it really doesn't have much, if any premium. Many minor errors add no additional value, but some people enjoy saving them (I...
It's not enough of a shift to warrant any premium
A good generalization is that coins like this need to be in MS67 or better to even start thinking about grading. The problem is that it’s...
Hey, you found something and recognized the error type. Lots of minor errors like small chips, filled dies, and die breaks don't carry any...
Mint Error News published an extensive 60+ page spreadsheet with a listing of foreign coins struck by the mint. It lists the composition, size...
Entry Post 7,1,3,4,6,5,2 Procelain Notgeld medals from Gaildorf in South Central Germany [IMG]
If you like it, you can make your own [IMG] https://www.sciencecompany.com/Turn-Copper-Pennies-Into-Silver-and-Gold-Pennies.aspx
Weigh it on an accurate scale. A Morgan should weigh 26.73 gms. A base metal copy will have a different weight. EDIT to add: It looks dodgy to...
Look at the pics on the links posted above. If you find one, you won't have to ask. It will be obvious. One of the reasons it's valuable is that...
Recommend this path; 1. Determine if the coins is an error or damage - most unusual looking coins found in change not mint errors 2. Is the...
I'm leaning towards a legit edge clip. The weakness in the RE may be a Blakesley effect, and the Rev rim around the flat spot looks more like it...
I'll put my trust in chemistry and science reasearch, but too each his own. Do you recommend Canada Dry, Vernons, Schweppes, or the supermarket...
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