I ordered a used copy of a paperback that was published in 1969. It was listed as being in good condition, with no specific defects noted. It arrived with the cover missing a corner and about to fall off, which places it either in fair or binding copy territory, but not good. I think most purchasers of used books haven’t thoroughly reaearched used bookseller condition standards. But this one has. (I’m trying to return it. We’ll see what happens.)