Yup,
That's the one!
I weighed it and found it to be about 28 pounds U.S. if memory serves me right (Sorry, I don't have my converter in front of me for Kgs). It is really slinging 1 3/4 basses on at once, and series 2 basses at that!
Christian now owns her, and has named her peggy after a John Entwistle tune he is fond of. He would know the exact weight. It is an outstanding example of how beautiful and how custom an Alembic can really be. While the fretless sounded fantastic, it really shines on the octave neck where there are custom electronics - series parallel switch, and a special stereo blend position which separates bass pair strings from the treble pair strings to the pickups for true stereo separation. A real incredible sound to hear!
Kris