Always find good discussions on here, to be honest I’ve ever only been active forum user on pokebeach in my highschool era.but yeh tons of lurkers, myself included 
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Do you still have the uncut mini sheets or were those the source?
If you have any doubts of them being authentic you can check the ink with magnification they should match regular Shadowless quality as I proved that myself. Printing is not 100% the same as there are some difference ofc because they were not printed together so tiny details may differ but the overall 99% of WOTC authentication quality is in there.
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I’m going to pull out my shadowless set and do a comparison post , colours do differ slightly but I’ll definitely check it out magnified. Dumb question but just a regular magnified glass? or a digital one?
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I’m not suggesting that someone dumped their CGC 10s because of your collection specifically. It was a comment about how many more copies exist than was previously known, and that the seller likely knew that many copies graded or otherwise are floating around.
I heard about the two sheets, I’m sure those being the ones cgc graded. But seeing all the extra singles that have been graded , even the ones hand cut with rounded corners . I’m assuming that even those had to come from separate sheets other than the two full known ones. You’d have to assume there’s still plenty out the from the beginning. Minus the ones that are probably in a landfill lol
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Im curious about this as well.
I found this statement about their process of authentication for these in an description of an completed auction on Sotheby’s
"Very little was known about Disco Holo cards until June 2022, when CGC authenticated Disco Holo cards for the first time. After extensive research by CGC, including conducting an infrared test, UV test, and X-ray fluorescence (XRF) spectrometer test, all of the chemical elements, most notably calcium, titanium, iron, copper and zinc, all correspond with a normal 1999 Base Set card. This demonstrates that the card stock and ink used in '99 Base Set production are the same as that used to produce the Disco Holo uncut test print sheets. "
Sounds great if they are actually doing this for each card. But after the Protohype I’m not so sure.
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I didn’t feel comfortable with that statement either to be honest, very vague … almost like “very possible “ these things could’ve happened”
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Thanks a lot for these additional pictures! It’s very interesting seeing the difference in a comparison like this. I think the disco holo looks awesome!
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X30 does the trick, also newer iphones can do that without magnification
Just saw TCA’s video regarding this post, what a find! mind sharing the background on how you got them?
2016 at a convention in Arizona, from an attendee that was looking to sell. I purchased thinking they were a type of bootleg vending machine sticker sheet (which I collect some of the bootleg cards for nostalgic reasons ,) Disco holo was unheard of. And other vendors brushed them off as bootleg as well for obvious reasons so not much interest.
I was just attending as well not a vendor myself
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thank you so much for sharing.
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On one hand the photo quality is bad so take what I say with that in mind, I guess that’s why you can’t tell apart the ink dots from the rosette, besides that the black ink is concerning as it may seems that the ink from the bottom is visible and shouldn’t be that way. There are also tiny white dots inside the black letters which is also concerning but could be attributed to surface wear. Here is a picture of mine compared to a regular Shadowless Gyarados. You can see the ink dots, pattern and quality is identical. Same goes for the key black ink on top for the letters. As I said before there are printing differences because they were likely not produced in the same lot, check the yellow description rectangular box, on one is yellow, composed of yellow and magenta dots, on the Disco is more “green” because the background cyan ink is present plus the yellow and magenta.
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Also I’m not an expert or been investigating too much into this as I’m really out of free time, but the pattern of your 2x2 uncut mini sheet doesn’t match the classic Disco uncut sheet one. Plus there are no Machamps.
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I’ll take some photos of a gyrados once I get in this evening so it’s a direct comparison. I’m assuming the colour difference in dots can be attributed to the colour of the card itself. And someone also pointed out very earlier on that the card I have resemble the “disco” pattern but wouldn’t technically be discos since the holo dots are larger.
I’ve done some research on printing process wotc had (some information directly from this forum) and correct me if I’m wrong but wizards used multiple facilities under contract to wotc to print pokemon .
The best comparison I’ve found in the glossy finish that’s concerned me that I mentioned looks like this sheet pictured below .
So these can be either a true test print under the same category as the discos . Or from a facility that wasn’t awarded a contract for card printing but printed other pokemon merchandise like the pog/tazos this uncut sheet facility supposedly did ( again all speculation)
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We don’t have much information about the sheet you posted. But a picture like the one I uploaded will be a dead giveaway. Hope you can upload soon!
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Comparing mine to a disco sheet layout is irrelevant.Mine are similar but are not technically discos. Also I’ve already explained I never received these as a complete sheet. If I did I would have left it in tact.
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