Thanks all... I'm done here. The Alembic connection is a dead end... Indeed, it seems it's a precursor to the Matsumoku Vantage Bass series. Thanks for letting me play through, you guys were great help and saved me a lot of wasted time!
At first I was kinda bummed, some of the Vantages haven't sold for more than $200US, but it looks like there are collectors out there and with a serial number like this, I may end up with a smile on my face after all. The best part, and the part that matters, is that for the 10 or so years that I was a working player, 5-7 days a week, it was a great bass to work on. In the end, it's the playin', that makes for happiness, right?
Cheers!
Bruce Phares