Chinese Silver Dollars

Don't think you can restore them at NCS, NCS can't unclean coins I think.

You can try re-toning them yourself, haven't tried it with my coins but have heard other collectors doing it. Might have other threads discussing re-toning in depth.

Recently I sent in a YSK Dollar for grading, it had gorgeous toning and patina, NCS 'conserved' it now it looks all bright and shiny but with no character and the toning removed, kinda regret allowing them to do that. Shouldn't they know better?

My understanding is that in some cases, NCS chooses to restore the coin to its original "shininess," which from a numismatic perspective, is actually probably not a good thing. But, it would likely remove all traces of a previous cleaning, which would allow them to assign a grade.

@Andi10 Not NGC, per se, but NCS, which is a subsidiary of NGC. To me, this NCS/NGC operation is very suspect, basically a backdoor for people to pay more to get a higher grade on their coins. But if the numismatic community lets them get away with it, that's a very good way for them to make some extra money. I wouldn't believe for a second that NGC doesn't give special treatment to coins restored by NCS. But, that's how the world works. It's all about making a buck.

@Numister