The RGP550 is an RG series solid body electric guitar model introduced by Ibanez in 1991. It appears to have been a limited edition model which was available only in Japan.
The RGP550 differs most obviously from the standard RG550 in that it has a clear pickguard rather than the usual black. In addition it has a rosewood fretboard instead of maple which is more common on an RG550. In reality the RGP550 is actually more like an RG570 since the transparent pickguard necessitates that the volume and tone pots be mounted via a rear control cavity as in the RG570.
The RGP550 features a basswood body with a maple Wizard neck with a rosewood fretboard with dot position markers. Components include dual Ibanez Vintage humbucking pickups flanking a single-coil, an Edge double locking tremolo bridge with a locking nut, and Gotoh tuning machines.
The RGP550 was available only for a limited period in 1991 and 1992. As such, this is a fairly rare guitar.