"I think most sellers are either lazy or forget this important notation."

Ron...besides the rarity of the chip the condition is THE most important part and I believe that the seller has an obligation to describe it to the best of their ability. In most cases, I believe that it is not laziness but the fact that the dealer would very much like to get a "mint price" for a chip that isn't quite there. Not describing the chip at all, gets the dealer/seller off the hook. Granted....the description can be less than accurate and you as the buyer may disagree with the dealers grading of the chip. You of course then have the right to either return for refund (dealer willing) or not bid on any more auctions from that particular dealer.

I also have received chips where only one side of the chip was pictured and the chip was described as mint/uncirculated, only to find that the other side of the chip had a problem. That IMO is for the most part deliberate.