Straits Settlements 1 Dollar - The Real Thing Or Not?

Looks fine to me. May have some finger prints on it later

Your spidey sense is telling you something is wrong so you should just trust that. The one thing I noticed from sellers of high quality Chinese produced fakes is that they frequently touch rare coins with their fingers as they're not serious dealers; don't understand numismatics; ultimately, they don't care about the coin, so why would you trust someone who clearly doesn't know enough to grab a coin in that way. They don't know what they're doing so they probably don't know what they're buying/re-selling. I've also noticed that they like to mix in real coins with fake ones to buttress their legitimacy and also often include scales in their pictures to show accurate weight.
If you buy it, I would assume guilt until proven innocent and test it every which way.
To me, this coin has a minty freshness to it, but with signs of wear, which makes no sense and if it doesn't make sense, like Judge Judy says, it's probably not true.

Details look right but weight should be 20.2grams.

In my own collection I have a couple different Numismatic Forgeries of Straights Settlements Dollar coins BOTH fooled world coin dealers. So you are correct when you say there are very high quality forgeries on the market.

I would ask the seller to confirm 2 things:

1. The weight - 27 grams is way off the coin was a token weighing only 20.2 grams. So his statement is simply incorrect. But why did he state it?

2. Between the King's name and ordinal is what appears to be an enlarged bead in the border. Ask to see a close-up picture that shows the face and edge at the same time. The only reason for a distorted bead would be an edge bump that causes an optical illusion of increased size.

If you get no answers - do not bid and consider you have dodged a bullet on this one.

Are any guarantees offered if you buy it?