As we know, NGC (unlike PCGS) has 2 categories of cleaning, harshly cleaned and improperly cleaned.
Here's a coin that would appear to be harshly cleaned, judging from those long vertical scars on it no doubt inflicted by a Brillo pad or one of those wire wheels I clean my golf shoes on. But NGC says no, this coin is merely improperly cleaned. Personally, I'm puzzled.
I'll confess to being puzzled myself. It's my understanding that - generally - NGC invokes the term "harshly" when the cleaning becomes plainly visible on major devices, meaning the coin linked certainly qualifies.
Improper cleaned would be harder to detect on the naked eye level, harsh cleaning is detected without the help of any devices. I sometime think the grader push the wrong keyboard button by accident, or too busy to correct it.
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