No. Not yet. But I think I will see one in July when I take the 2-day course Facing The Chinese Counterfeiting Threat taught by Beth Deisher (Coin World Editor) and Susan Headley (investigative reporter for Coin World) at ANA Summer Seminar.
This question should have the word "knowingly" in it..IMO If i have ever seen a counterfeit slab, I would not have known. stainless
Have I seen one at a show being traded as genuine? Not that I know of. I have seen many on the bay . Last Long Beach PCGS had a case full of them.
Educational ! One more reason I wish I was there. Were they high-quality fakes ? Deceptive ? If you had come across them on the bourse, would you have spotted them as fakes ?
There have been alot of threads on the CU forums, when a fake pops up on the bay, they will find the real cert # and post it comparted to the genuine. I do not fully trust myself , only because the technology they use constantly changes. I know what last years look like, lol. This years are a guess. Even the current Travis book is not 100%, the counterfeiters read it also I am sure, lol.
Exactly what I just stated on anothe post. I feel many people have purchased fake coins in fake slabs, real coins in fake slabs with erroneous grades, redone slabs with changed coins. As I mentioned in that other post there could be many of these in your possesion right now. People purchase a slabbed coin thinking it is the real thing, put it away, never really have it authenticated. At coin shows I've been shown such things by dealers since they know me. Many are being sold and the purchasers will probably never know unless they somehow have them checked. China, and possibly other countries, are presently mass producing some of our coins and many are being put into slabs. I really wonder how many coin collectors have fakes and don't know they are fakes. One dealer I know purchsed a 1916D Mercury Dime in a slab. He didn't like the grading company so he opened it and submitted to one he did like. It came back in a body bag as faked. HMMMM. So who knows.
Whoa! If you are talking SGS, NES, NNC etc., that is another whole ball game. I am referring to PCGS, NGC, ICG, ANACS, and probably DGS and PCI. If you are including the junk TPG's, you may well be right.
PCGS has been known, on more than 1 occasion, to have a coin previously in one of their slabs re-submitted only to body-bag it as a fake. The reverse is also true, there have been coins bagged as fakes and upon re-submission they were slabbed. You can try and figure out why. And no, I have not seen one in person but have seen pics of several.
I said never, which might just mean I was fooled. How can anyone who responds "never" really be certain?
At some of the bigger coin conventions sometimes people have them out... to show people what they look like and they are more then happy to show them to you. I have seen both of the fake holders pcgs and ngc... the pcgs ones are better then the ngc ones.... bot not much. they are both pretty easy to identify if you handle a fair amount of graded coins.
I have little doubt that it has happened. And I have no doubt that there are fake slabs out there. However, Just Carl's original statement was; That says that somewhere around 50% of the slabs out there are fakes. To my mind, that is an absurd statement even if you include the junk TPG's. I will concede that both fake slabs and fake coins in slabs exist. I will not agree that I have over 100 fakes (of my 350+ slabs) nor would I agree that any collector or dealer has 100+ fakes probably not even if he/she is trying to accumulate them.
I agree RLM. That is a preposterous number. Someone posted a fake slab here before (can't remember which post) and it looked wrong to me before they poster pointed out why it was wrong. I am not expert, but it's hard to believe that many old time collectors (smarter than I) would be fooled and not follow their instincts.