I can almost guarantee it. Just had a crossover mislabled as the wrong denomination - I mean, you have the old slab for reference...
As long as the cost of claims remains lower than the cost of inspection, then nothing will change. Most of the time a simple "Oops! Send it back and we'll redo it." is sufficient to satisfy those that notice the ineptness. They rarely suffer significant monetary loss from their goof ups so why put money into inspection by knowledgeable inspectors? Perhaps that is why I loath slabbers and those who put their faith in them. Free the COINS from their TOMBS!
Then you should hate every business with very low defect rates. That business isn't unique to grading
When I bought it I was like yesssssssss!!!!!! When I received it I cried NOOOOOOOOOO!!!! The whole sorted story is here: Mechanical Errors--Another risk of buying sight unseen
Here's one I should have kept and really regret sending them back. This was a Sealed Shipping box of 2008 Silver Eagles submission which I was hoping to get some First Strike™ Rev of 2007 Silver Eagles with. Imagine my surprise! I have no idea what the heck they were thinking!
I seriously doubt that. Not even half of the early coppers have attributions on the label. A lot just have the date
They can't even get the basics right. I can't tell you how many Reverses of 97 have Reverse of 94 or Reverse of 95 labels. And that's pretty basic. Now if you are counting unattributed coins in your base, then I suppose they COULD claim a low error frequency since they CAN'T be wrong. I count decisions and half of them are wrong. But if you want to be naive and trust them because you have no time to know the difference, then go ahead. I'll profit from it.
Here is an ANACs slab error on the current Heritage Auction site. The S-196 is labeled S-192 and Heritage has not caught it this time. They usually do if their expert see's it, but this was probably handed off to a rookie who trusts the slabbers.