1992 Gibson Les Paul Std. "Prototype" a chambered body Experiment that was never produced.  This is a very special & exotic Les Paul Experimental Prototype made by hand at Gibson’s Research & Development Dept. by J.T.Riboloff, its Deep Cherry Sunburst finish w/a see-thru red back, sides & neck are very rich in color, its designed like a double cutaway Jr. having a chambered lightweight body, it has 1 mini-Humbucker & 1 full sized Humbucker having no pole pieces w/1 Volume & 1 Tone pots, 1 mini toggle switch a 3-way pickup selector switch, it is virtually mint shape & is sure to be a very collectible asset in anyone’s guitar museum, comes with a letter from George Gruhn confirming its history & has a nice brown hard case. Let's just go back 20 years in time...old appraisal by George Gruhn !