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   PSA/DNA claims to place a "mark" on certified items that can only be seen w/ a special "calibrated laser".
1. How do we find out where the invisible "DNA strand/mark" is located on a certain item, and are we able to view this ourselves at home or is special equipment needed?
2. If a clear coat spray (not paint, of course) were to go over the mark would it still be readable? (I'm referring to like a guitar or pick guard.)
Thanks...

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My understanding is they mark the item with a synthetic DNA. If you ever watched CSI or one of those shows, a black light and the correct lense or luminol spray may indeed show you the mark, otherwise....you would have to ask PSA how you can see the mark, and if clear coat will compromise the DNA. 

I always wondered what the hell they meant by that DNA strand, and what it really means to collectors. I still don't get it.

I contacted them (PSA/DNA) personally by phone and couldn't hardly get any kind of educated or accurate info. I would assume that contacting them personally by phone would answer my questions. So again, if anyone can help me I would sincerely appreciate it. I mostly want to know how or if I can personally view it. If not, then what's their plan for allowing this to happen? Thanks...

Marketing idiocy. And it has people looking at everything but the autograph. I always thought this would fluoresce under normal black light - I don't know or care. False security IMO. "The chances of duplicating the strand are 1 in 33 trillion!". Well, O.K. I am more concerned about the real-world chances of a secretarial passing. I have seen many items that are either secretarial or just no good with this "DNA strand" attached. I do not buy or sell stickered/vandalised/bio-advertised?/micro-billboarded material. Apart from being vandalized, such material is usually well overpriced.

I mean, who is going to forge something and then attempt this? I would be interested in hearing about actual applications of this "DNA strand" business in the real word. I would not be terribly surprised if they don't give the answer. Keep us posted. 

It's like getting all exciting because there were new holographic stickers and newer "DNA" watermarks on the COA. It gives the impression folks are concerned that the COA could be fake. This suggests folks are indeed giving it much too much weight. If folks would just spend that energy on thinking the autograph might be fake... 

Do let us know if they will confirm its presence for free, or a fee. Even if I saw it, I would still do the same analysis as if it were raw. 

"Eliminate Counterfeits and Forgeries"...uh-huh.

"...verifiable using a proprietary infrared laser..."

 I am very surprised at how hard it is to get info on this subject. It must be a secret VERY well kept by PSA. Who can tell us what the mark is or how to see it? What if someone really needs an item verified as to whether it's a counterfeited or duplicated item? Does it have to be shipped to PSA? As I stated before, no one at PSA even has answers. Very strange..Lol!

they use a trace of a certain dna marker on the itiem only know to them .

that's a good thing as of now it cant be forged or copy like certs or graphs.

kinda like a micro chip in an animal

They must keep private records of where n what the mark is. Do you know if a clear coat were to go over it if the mark would remain or not? Even PSA can't answer that. I think they have low level informed at their phone answering level. Hard to get answers from them. Thanks for the info!

I don't see the point of the "DNA" dab other than a marketing gimmick.

So there is a tiny dab of some material on the item that PSA can later detect to prove this is indeed the item that PSA originally reviewed. Well, isn't there a photo on the letter? And if it is a card COA, then there is a matching sticker.

If the accompanying sticker, card COA or letter is a counterfeit, they should be able to easily detect this and don't need the lack of a "DNA" dab to prove it.

How often has someone gone back to PSA and they used the "dab" to prove anything?

I can't see any truly practical use for this.

Sometimes the ink may fade slightly from the date of photo and sometimes they don't look the same as in the pic due to lighting, etc. when they took the pic.

I actually needed Beckett to update a photo for 1 of my certificates because the ink looked dark yellow and faded in the photo when it was actually signed w/ a silver sharpie. Can be very nerve wracking so to speak...lol. 

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