Would somebody kindly post photos of just what the heck it is they're talking about? I'd like to give these "marks" a look-see myself and I don't happen to own the decks.
I'm not sure myself Don, I don't remember a marking system being mentioned, but here's a scan.
Now I just need a scan of one of the cards in question for comparison. It doesn't sound to me like there's an intentional marking system in there, but I can't really tell without more of a sample to look at.
The biggest question: does the deck pass the riffle test? Because that's how the first Legends marking system was discovered.
And then to recommend that we pick-up a copy of a book that's been out-of-print for years and costs several hundreds of dollars used.
Gosh. Just gosh.
/bama
Actually, Bamabenz, that book - and the DVD series - are still considered the standard today for casino game protection. The DVDs are probably cheaper and easier to understand, since a drawing or a photo doesn't really hold a candle to seeing cheating moves in action.
But, to the point - I see this as being much simpler than is being assumed by some. EcNate spotted something on his deck and it upset him. The maker of the deck offered to give him a refund. Are they being a little "hedgey" when saying there's no advertised marking system BUT they're not "regulation decks for gaming?" Sure, but the VAST majority of custom decks aren't "regulation decks for gaming," especially if by "gaming" you actually mean "casino gaming". Legends version 1 had no advertised marking system and weren't regulation either! Sure, the marks were there, but they only hinted at the existence of hidden features, leaving the buyer to discover them - and leaving non-magicians out of the loop altogether, as it should be.
All we have, it seems, is a discovered, unadvertised feature, one that the company doesn't want to flat-out state as fact because they're trying to keep secret features SECRET. I might personally disagree with the logic behind the waffling, but I can certainly understand it and respect it. A magician using such a deck doesn't necessarily want it being advertised all over the place as a trick deck having such-and-such features, because in the age of the Internet, very little information remains a secret for long.
So, guys - this now means you have a "treasure hunt" on your hands! If you discovered one hidden feature, knowing what was done for the original Legends, there's a fine chance there's more! Patience and careful examination could reap a nice little payoff of information to the person who finds it.
In fact, I believe I've spotted a pair of possible one-way marks! And I only looked very briefly at a single card back, the one posted by Anthony!