You should NEVER use vacuum for coin storage! I know it seems like it makes sense on the surface but the logic is flawed. By creating a vacuum you...
The moisture is already there, it's part of nearly everything. You're breathing it in right now. It doesn't matter how well you have your coins...
That's how the mint labeled them in the rolls they sold. It's simply the order of release, i.e. Lincoln Penny 1, Lincoln Penny 2, etc.
pKb of KOH is about twice that of NaOH. Both are extremely strong bases, especially as the ionic strength increases. In my experience brief skin...
...and I just love this one:[ATTACH] [ATTACH]
Ag+ + Cl− → AgCl Cu^+2 + Cl-→ CuCl and CuCl^2
Looks like PVC damage, you removed the residue but the cupric chloride has formed and locked onto the surface. VC may remove the verdigris but the...
Insider, I will try to answer some your questions: It will evaporate (mostly) and potentially redeposit the very thing you were trying to...
What's the grade?
That thing is hammered!
I bet the brown looks smoother in hand. Hardly a hit on it that I can see, often seen weak reverse. 63BN
One of my favorite coins![ATTACH] [ATTACH]
I like it![ATTACH] [ATTACH]
What do you call copper corrosion then when you're referring to it?
Coins in the center of the bag have great protection. The outside coins act as "sponges" and absorb in-coming contaminants.
Personally, purely as an investment, I'd rather have a rare muscle or sports car. The right car will appreciate much faster than a coin. I also...
Looks like a well sealed bag, I would not open it. It's a nice additional layer of protection. :)
Airtite inside an Airtite? LOLOL I like it! Never use vacuum conditions for coin storage....NEVER. All vacuums will leak air in time, this...
All metals tone and corrode, nothing you can do about it. However, you can greatly slow the rate by minimizing exposure to air. When you say...
PMD
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