Sorry that's not silver but nickel copper. That is indeed a coin from the Republic of China. That is only worth by face vault which is around...
Yes, PVC or the cheap plastic. PVC normally wouldn't do much damage under "usual" circumstances but when it breaks down, it releases chlorine,...
I personally don't think any of them are pretty "rare". I presume that one of your family members travelled overseas and hence they are lying...
I think there is a confusion that is going on right now. While MOST cleaning will ruin the values, you have to understand that it is the...
1 1 2 3 4 8 13 Fibonnacci 3.1415926 pi 1.6180339 phi function. Is this some kind of test? :desk:
That's because quartz is madely made out of silicia or silicion dioxide, which is rarely active with other metals. The rust "dust" that covers the...
I just don't see how it should work. I mean, from the basic chemistry, rust is just FeO or FeOH. Once the rust has "eaten" away parts of...
I see plenty of problems with the new technology. Wait till you get some mafia men getting hold of those machines and all you know next is that...
Speedy: blame the admins who aren't maintaining those machines properly. No excuses, they are getting paid for doing proper maintainences or the...
I doubt it - it's part of the marketing scheme, if not scam. I remember the time when the French mint allowed one grading company (can't...
Midas, I disagree with a few points. This will only work on VERY modern coins with no nonsense addictives, such as minor copper parasites. Another...
Of course you wouldn't find that in a Russian catalogue. That's a coin from Bulguria, 10 stotinki.
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