I came across this 73 P bass with a rosewood fret board and a walnut plug at the headstock for the truss rod. I have only seen this on fretless necks with rosewood boards, or on maple boards from this era. Has anyone else seen this before, or was this neck fretless and later modified to have frets installed? I thought I knew a lot about vintage Fender basses, but this one is throwing me for a loop. The back side of the bass is not shown, but it does have a skunk stripe on the back of the neck and the neck plate and tuners are genuine Fender and appear to be from early to mid 70's.