FWIW, that isn't taught in high school chemistry anymore. Inorganic chemistry is probably the closest. :P
I wouldn't call that toning. I always thought the pennies started out as that blue-steel color... then as they oxidize, they turn the white-grey...
Given that the only "post-1964" 90% silver US coins are either commemorative or "silver set" issues, there shouldn't be wear on the modern coins....
Why would you do a post about how your cleaned a US Cent... then post a Mexican Centavo?
What specific coin are you talking about? A US coin with a mintage of 2,000... would probably have been made for a very specific numismatic...
So, given that PCGS is using the 5 oz holders for GSA coins, does that mean the grade guarantee is in place for PCGS, unlike NGC?
I'm assuming your name has two i characters (one capital and one non-capital) in it. I copy/pasted the name as listed in the thread, and it came...
treylxpi47 doesn't exist, so matthew88, send me your address by PM. Could everyone after me please confirm that they still want to participate? We...
Offering a futures contract outside of the "normal" channels without one of the following: Futures license Passing Bar in New York ... is...
SCFY = Detecto ? I noticed a similar pattern in their posting habits, and I also noticed Tim doesn't respond in the SCFY threads. That all said,...
Amazon compliance requirements for sellers are much higher than eBay's. You must accept returns for essentially any reason, and I'm fairly certain...
I'm unsure of why the seller insists on sticking a grey sock in their photos. Also, I'm pretty sure that listing would violate the "Certified...
I'm not really selling them, but a guy that I buy through is. He has the following dates: 1881-S 1884-O 1885-O 1886-P 1887-P If anyone is...
I didn't say SAFLIPS. Those are PET. I said Safe-T flips, which (edit) appear to be vinyl.
For future reference, just soak it in acetone. You probably don't have to rub anything. Also, if the coloring on the front is tone, it won't be...
I see no luster at all. I would agree on details unless you're doing something weird with the photography. I would say AU details.
The intention behind the "border" rule is so sellers don't take pictures where the "frame" says "MS67+++" in it or something similar.
I purchased about 500 of these from eBay, and the sellers/manufacturer claimed that they're PVC free, but they're not. They're vinyl flips, but...
That's illegal, actually, and you know it. Beside that, why would anyone pay you $1 for a year of options rights at $70 when you can buy open...
I include Iridium in the PM argument, due to it being a pretty white metal, as well. Personally, I think the reason that PGMs aren't treated...
Separate names with a comma.
