Here is the old thread on the look-alike that was not Wyzard's bass.
https://club.alembic.com/index.php?topic=23429.msg234701#msg234701 As noted within, his Alembic had a Master Volume added...
The subject bass of this thread appears to be early/mid-'77 or maybe a bit later, to my eye. Could be a '76 with some newer parts and repairs. Has two truss rods, but no cover. Square battery box cover, which is an older feature. Pickup placement is very close to my '77. Bridge and bird tailpiece look like later issue. Can't see enough detail in the picture of the logo to tell if cast or handcut. If there's a serial number in the end of the fingerboard I can't see it, which suggests it was/is probably stamped in the end of the headstock, and now obscured.
Not that any of that means anything, I just notice stuff.