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Best way to remove scratches on NGC slabs?

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What's the best way to remove scratches from NGC slabs? I've had people tell me different methods but no one tried them on actual NGC slabs. I have a slab that has a few light scratches and a couple of medium ones. What would be the best way to get rid of them? I've tried toothpaste and novous on another NGC slab and they got rid of the scratches but left tiny hairlines all over the whole slab.



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I have good luck using an automotive product called PlastX by Meguiar's

It was recommended to me by Mark Goodman. I put a tiny dab on the slab and polish hard with a clean terry cloth in the direction I intend to light the slab when photographing it. When done, I wipe it carefully clean and wait until I can't smell the (somewhat minty) scent of the PlastX before storing the coin again.



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