Hi Phife,
Nope, this isn't the first Essence. Here's what I found in the file:
top: Flame Maple
accent: Walnut pinstripe
body: Maple
neck: 3-piece Maple
scale: long, 34"
fingerboard: Ebony
finish: Clear Red
pickups: MXY4
controls: "Essence" volume, pan, filter, mono output
originally made for: Mesa Boogie, GmbH Germany
birthday: November 12, 1991
Weird! There is NOTHING in the file about the plug on the side of the bass, so that's completely news to me. Can you email me a larger (and perhaps focused on the plug) photo for the file? The body isn't thick enough for a side jack, so that's even more confusing.
The neck pickup position is custom on this bass - usually it doesn't touch the truss rod cover. Also, those vintage F-2B knobs are pretty dope on there!