https://reverb.com/item/35215239-alembic-series-i-bass-long-scale-1977-natural

Thought I'd post this; it's my Series I's twin!
(http://club.alembicguitars.net/index.php?topic=22738.msg252073#msg252073)

That's a pretty bass. I wonder if it is the next, or prior in sequence to 744. The back sure looks like it could be from the same board.