So some of you may have seen it on FB Marketplace, well I got it. It's a custom super 3 coil pickup. Never installed in a guitar, and no wiring diagram. As it was advertised and told to me:
Guitar pickup Ibanez prototype 3 coil superbucker 1979 Hoshino USA PA Employee made owned, prototype from Ibanez guitars. Wound in 1979 . This looks like other triple pickups, but is different and was never produced.