Its my understanding you could only get a one piece ebony if you bought a complete set with a wall rack. They included a gradient from dark (ebony) all the way to a light shade.
I think it was a 5 or 6 cue set. I think these sets were also known to have oak cues in them.
Other than that, blanks or two piece pro models were the only way to get a ebony titlist.
I know of one person who has had a one pice. I have never found one and its the only one I cant find. I have 6 oaks and 0 ebony...