Hydrogen cyanide is produced by the potassium or sodium cyanide reacting.
It isn't even a 1970 S, the mintmark is altered.
If the coins show no wear they are uncirculated, no matter who rolled them. If not then ANY business strike coin that the grader does not...
Makes me very glad I don't collect modern stuff.
I can understand a medal for Sadat for his role trying to bring peace to the middle east, but a gold medal to Gleason for being a good football...
Cyanide used to be a common coin cleaner, and it works, but it can also kill you in very small quantities and has been known to do so to...
Yes, because the Secretary of the Treasury preferred Flannagan's design. You can have a design contest and pick a winner, but it is the Secretary...
No process that I know of. No, damage like that could definitely occur outside the mint. As you say yourself, the "cud" is actually the result...
I don't see mint luster, I believe I see a couple plating blisters, the rippled surfaces are fairly indicative of plating over roller striations....
I see a scratch, not sure if is on the die or the coin but I suspect the die. Also see were the depressed line in the wheat ear are joined to the...
All cents from 1963 to mid 1982 are brass. You have a badly scratched up normal 1979 cent.
You're thinking Hammer die and Anvil Die not obv/rev. The obv can be either hammer or anvil, same with the rev (though typically not during the...
For starters post pictures here, but just keep in mind that the real ones are proofs and rare, while for every real one there are probably a...
What language is that?
Did you read the thread? 99.9999% chance it was plated after it left the mint.
You think they didn't have headphones in 1966? :)
Mine does, but I have this terrible character flaw.....I'm honest.
Doug is probably pretty close if not right on. The date and mint can make a big difference. I have seen a lot of other date/mint combinations...
Well the Almanac indicated that the change was made in 1947. So I went to the Law Library of Congress...
Due to how advanced the chips in the obv field are it isn'y likely, but I would mention that this ov was also used for S-30 and 31. I really...
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