This is a vintage 1983 Yamaha SBG3000 (SBG 3000) electric guitar. This particular example, serial number 122751, is in very excellent vintage condition and includes the original hard shell case, as well as, the original warranty/registration card!
The SBG3000 features: mahogany body with a carved maple top and Mexican abalone inlay, laminated maple/mahogany neck, bound ebony fingerboard with split mother of pearl and abalone inlay, (2) Spinex alloy humbucking pickups, Small-Mass Tune-O-Matic style bridge and tailpiece, specially designed precise-torque tuning machines, Yamaha’s push-push coil split switch, gold hardware, the original warranty/registration card, and the original hard shell case.
This guitar is in very excellent 100% original condition. There is some very minimal and expected wear on the gold tailpiece, in addition to, a little wear on the black anodized pickup covers. The neck is perfectly straight, the guitar feels incredible, and the overall quality of the guitar easily surpasses the best American instruments from the era. Those of you familiar with the model are aware of how stunning it really is.
While this example is in very excellent cosmetic condition and perfect structural shape, it appears that the previous, and only, owner had installed non-original tuning machines at some point, only later to restore the guitar with the original tuners. Barely visible are the professionally drilled holes, that barely peak out from beneath the original tuners.
Recently, while being thoroughly inspected and tested, I noticed that one of the push/pull potentiometers was intermittent, and had stopped working well. Currently, it is stuck in the released position. The switch will need to be serviced, repaired, or replaced, but it just stopped working several days ago, so it will probably only require something quite simple.