Have you ever seen so much corrosion on trade dollar before?

Came across this 77CC and it has deep pits/corrosion around 'Dollar' on the reverse
What could cause this? I know many trade $ went overseas but I've never seen one this badly damaged before
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Lots of factors. Environmental damage, improper storage, exchanging of the many hands. If she could speak I'm sure there's plenty of stories. IMO I've seen alot worse.
I'd say corrosion is the least of this coin's problems.
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Pretty suspicious
Oh, yea.
I think if you're going to say "fake", you should state something specific.
I see a heavily "traded" trade dollar. The (to me ) mild ED on the reverse looks authentic and not something I've ever seen a counterfeiter trying to imitate. There is an amateurish scratch multiple times completely around the circumference on the obverse up against the denticles - why would any faker waste time on that? I'm guessing someone was trying to scratch out gunk, or a misguided attempt at tooling.
A lot of fake trade dollars are a century old or more. The damage need not have been faked but occurred subsequent to its manufacture.
The surface roughness could be environmental damage, but it also could be from a poor casting.
I would call that a fake.... the most obvious factor is the tooling all around the obverse rim... Cheers, RickO
I don't think that's corrossion.
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