Yep, earlier version of the L-1500 w/a single MFD in the "stingray sweetspot".
The body is a touch thinner than most L-series, the edges are a bit less rounded, default is #6 neck w/1.5" nut width. Some are series/single-coil switched instead of series/parallel. They have a funky semi-circular route on the back of the body around the neck joint:
The ones I've had were very noisy in active mode and I only ever used passive (I think I fixed that on one with a chip swap for the preamp). IMO get a sound the L-series can't get exactly (pickup placement has that effect). My first impression when I get one is always "these basses have enough low end to make me happy" but I eventually let them go for something with a neck pickup (L2K, SB2, JB2) but that's a personal preference thing. Someday I hope to pick one up again to add to my skinny necked G&L setup (L2K, SB2, JB2 . . . + Climax)