This lady is as mysterious as she is beautiful. I have seen about four of these with a metal Ibanez logo before, but never one in such great shape and with a ‘paint-on’ logo like Ibanez did in the transition year of 1967.
These pickups look like bass-humbuckers, and can be controlled separately. Operating this requires quite a manual:
The black switch on the left manipulates the two left oblong magnetic pickups; the black switch on the right manipulates the other two pickups on the right.
So… left switch for bass strings; right switch for treble strings.
If you put the left black switch in the upward position, then the upper left pickup comes to life. Put the left black switch in the downward position; then the lower left pickup works. Switch in the middle position and both left pickups are on.
The right black switch works the same way, but for the right pickups only.
The little white switch on the bottom turns it from mono into stereo. And yes – she even still has her original stereo plug!