Well, I took the plunge and am now the caretaker of Alembic #33.
Craig Brody worked with me very generously and made this purchase possible. I was hesitant to even ask about the bass given the name of the shop was Guitar Broker, but he was very accommodating and flexible.
For someone fascinated with the early history of this amazing company, I couldn't resist the temptation of owning a very early example of their groundbreaking work.
It needed a neck adjustment and the electronics, while quiet, need some TLC, but overall I'm ecstatic with this bass. It has a beautiful feel and plays like a dream. I count myself blessed to have this bass in my little collection.