Well it does say try at your own risk if you go to the actual video on the youtube site, but I can say that I've done it quite a few times and never broke one. I think the way he's hitting it is at it's strongest point, on the sides. You could practice on a slabbed coin that's not very valuable to see how it works. I should also mention I've only ever tried it with PCGS slabs so I'm not sure about NGC, ANACS, etc.
You would think the TPGs would control this better. They can see when they put the coin in.
Isn't the "final inspector" the one who should be checking and correcting this, or is this not high enough priority to waste the time and money cracking it open and sealing it again?
Quote: Tbone, what if you...accidentally...break the slab?
The chances of "breaking" it is extremely slight. There is a chance you might crack it, but if you do then you can still have it reholdered. You could just have it reholdered to correct the rotation, but it wouldn't be done for free and their would still be the chance that due to vibrations the coin would arrive back rotated again. So you might as well try the tapping routine first.
I've made coins literally dance (spin around) in the slabs, by holding an electric toothbrush against an edge.
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013! ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
My experience with NGC is that they will reholder your coin for free. I suggest you take it to one of the coin shows that NGC attends to make sure it will be done for free and to save you the cost of mailing and insuring your coin.
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