First, not all reviews on Amazon are objective. Some are written by sellers or their employees or their friends or ... I remember just after a...
A vacuum bag will not maintain a vacuum indefinitely and would need to be pumped out periodically. Keeping coins in an inert atmosphere would be...
It wasn't really the Farouk coin that triggered a search by the government. But the lawyer representing the owner in that case was contacted by...
They've done a nice job. It's possible to find out more about a particular lot (like the cert. no., pop. standing, and previous auction sales of...
I think that was just defensive verbiage and puffery on the part of NGC to say PCGS coins no longer meet their standards. For most US series, the...
Vacuum oven and tank or generator of hydrogen sulfide can do wonders! Don't try it. Hydrogen sulfide is more toxic than carbon monoxide! :dead: Cal
NGC periodically revises the point tables for scoring registry sets. These are huge tables, so it is hard to detect when a few values have...
Yup. As one newspaper commentator said, when you sign-up for a Facebook account, you're not the customer, you're the product. Most of their...
I recommend going to a few smaller club shows in your area. coinzip.com will list them. There is also a monthly commercial show; see...
Most clubs have flexibility for venues for their shows and can make ability of dealers to carry handguns a condition for renting. For large...
I know a number of dealers who have handguns in their shop. It's an interesting question how many carry a firearm into a major show. I've looked...
The security measures you should take depend on how much you have to lose. If it's a few hundred $, you don't need the same security as if you've...
"Details" does not mean a coin is entirely ungradable. For NGC and PCGS, it means: 1. it has some sort of damage, and 2. it can be graded, but...
Sometimes corrosion can be removed by further wear on a coin. The price, of course, is the grade goes down. Cal
Petroleum ether, which is not really an ether, is a mix of low molecular weight aliphatic hydrocarbons. The Skellysolves are purer aliphatic...
And he was very pale. Cal
Yeah, and go whole hog and use pet ether. Might make a bigger boom than acetone. :stop: Cal
Yup. Acetone should be used once unless you've got the knowledge and skill to re-purify it. Even then, it may be more economical to purchase it...
I agree. Acetone is a degreaser, but won't react chemically with corrosion or toning. Swishing a coin through acetone might cause a few flakes...
I too made the mistake of using Whitman folders and found they are an excellent way to induce edge corrosion of coins. I don't really have any...
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