This is an excellent example of the a late 60’s Gibson J50. This guitar is in great condition and sounds great, stays in tune, neck is straight and truss rod works perfectly. The bridge and fret board are BrazilIan rosewood. All the bracing is solid and glued tight. Great neck angle. I think the nut is original , nut width is 1 11/16” The bridge saddle is set up with a solid hand sanded piece of rosewood (not glued in). I have all the original saddle parts included and are full functional. it is cool to try different saddles to change tone and volume. Many different ways to set up saddle. YouTube has some aftermarket options to look at if want to change sound profile.
I also have a 1960’s guitar case which has been painted to look better and is also full functioning.