That bass is a Series II. It was mine for a while. I got it from the original owner here in New Orleans.
The LED's in the fingerboard went out, so I sent it back to Alembic. It had some neck issues so they fingerboard had to be replaced anyway. When that was done they fitted a board without LED's. While the bass was there I had them remove the master volume because it was in a very strange spot to me. I kept hitting my hand on it. They replaced the master volume with an inlay.
I ended up parting with this one because the neck was too wide for me. It's a medium scale so maybe that is why the knob placement was off for the master volume. I just was not used to it in that spot.
If I remember correctly, I ended up trading it locally for another medium scale Alembic Series I with a quilted maple top.
Michael