It looks heavily worn, but please start a new thread instead of sidetracking this one. Thanks!
You'll get better results if you start a new thread, probably in the US Coins or Errors forum. Welcome to CoinTalk!
Have a look at Kitco. The downward spike was narrow enough that lower-resolution charts won't show it. Bottom was at $14.34; it dropped there from...
The companies that gimmick up quarters with gold and/or platinum use the term "layered". I've also seen "drenched". :rolleyes: I have a feeling...
For me, it brings back memories of dropping a jumper cable and nearly spot-welding it to a metal bumper.
Why do you doubt that it's plated with platinum, given that (1) platinum-plated quarters are sold by the thousands, and (2) an XRF analyzer...
I doubt that there are many collectors interested enough in the spitting horse variety to want it after it's been plated. Plating a coin's surface...
Very good. Now finish reading the thread. ;)
At silver's current price, melt for that 90% would be $36.75, and melt for the 40% would be $47.40. I don't consider that a good deal, but it's...
For one-centimeter contact widths, given the formula above, I get a resistance of around 7 microohms. Run 100 amps through the coin, and you'd get...
I'll prepare to repeat this here whenever the subject comes up, because you can be sure you won't be seeing it in Sigma's promotional material....
Only if you're waving the probes at the coin from a distance. The Keysight U1252B I just picked up measures down to 0.01 ohm on the 500-ohm range...
So far, it's confirmed with a high level of confidence that I'm absent-minded. :rolleyes: I won't get to it any more tonight; maybe tomorrow...
No, nickels have uniform composition throughout. In fact, it's exactly the same compound that forms the outer clad layers of dimes, quarters, and...
O...kay. I'm not big on watching videos, but it looks like you've found several demonstrations of putting rhodium onto gold, one demo of removing...
I don't have any experience with rhodium plating, but a bit of Googling indicates that step one in the process is cleaning and polishing the piece...
If you've lost 1g of weight from a half, you've likely worn it down to AG. How many AG Kennedys have you seen? I'll try to remember to haul out...
Okay, first, I didn't realize that SF issued any business-strike cents in 1982, but here are two articles that seems to support that:...
It's possible that I'm under 0.1%, but only if you count individual cents and nickels from bags.
Yep. That's part of the reason you'll almost never find them in circulation (the other part is that most proof sets get kept in their boxes,...
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