Wow, tough one! :-)
That's an early '84 number, truss rods cover is also 84 style.
Though everything is possible with Alembic, most common sizes for those covers are:
Very small with squared edges until about '83
Slightly larger (like yours) with squared edges in '84 (maybe also late '83 and/or early '85)
Again slightly larger (same size as what's standard now) with squared edges in '85 (maybe also late '84 and or/early '86)
Modern style, large with rounded edges on fingerboard side since '86 (maybe also late '85)
And that's clearly a 5, not a 4... :-)
So maybe "finished" in '84 and the customer wanted some extras which took it into '85?
Also looks like there was some restamping done, double 8, maybe double 3, double 1 in different fonts (?) and double US.
Subscribed! :-)
Awesome bass!
That's a custom variation of the Spoiler body, or maybe somebody slipped and bumped the lower body portion when they were being glued up.
Anyways, almost get Scorpions vibes from that more symmetrical look.
And that's a Series II style neck, one more cooler than Series I innit! :-)
Congrats and enjoy!
