Any of the lawyers would know better, but I don't think the disclaimer would protect them from having sold something as obvious as a photocopy.
Ski areas have paragraphs of disclaimers on the lift ticket and still get sued when they're really negligent. That's why most of them close trails with even slightly poor conditions. The days of skiing a trail with patches of bare grass every 20 yards are long gone. In practice, the disclaimers only apply when you're doing something really dumb. (like skiing on a trail with little snow cover and jumping the grass patches
Didn't have an accident, but easily could have)
I'd think that selling something under a disclaimer that even someone not intot he hobby could tell wasn't right would be counted as some sort of negligence. Proving it was deliberate rather than incompetence might be difficult. I'd still contact local law enforcement especially if they have a fraud dept. If the overall dollar value is large, that might interest them so be sure to mention the number of fakes rather than just the one item.
Steve B