Once long ago, VC is not effective for this application IMO.
It looks like wax to me. It was an old preservation method to rub or drip wax onto your a coin. Easy find out if you crack it, I suspect xylenes...
Just put it into a ziplock with a sacrificial coin and a small desiccant pack. This coin is telling you your storage sucks.
Ancient @Insider secret!
Hopefully! Either that or the buyer has no idea they've been scammed they'll add it to their collection and someone's scam worked. Or the buyer...
No free shipping this round, got burned on my last sale. :( https://www.ebay.com/itm/325562450999 [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH]...
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End of roll! [ATTACH] [ATTACH] [ATTACH] [ATTACH] [ATTACH]
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Half green! [ATTACH] [ATTACH] [ATTACH] [ATTACH]
I wouldn't bother with acetone except as a final rinse, just put a drop over the areas one at a time, let stand a couple of minutes, use a...
Agree with others, looks like heat and corrosion.
Nice RPM, very obvious. VC FTW!
Verdigris is any type of copper corrosion - "bronze disease" is just a name coined by some to describe the corrosive process. The end result is...
Another nice toner up for auction! $0.99 to start with FREE SHIPPING! https://www.ebay.com/itm/325551695062 [ATTACH] [ATTACH] [ATTACH] [ATTACH]
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