I believe this is Brazillian Rosewood based only on the visual evidence of this photo and nothing else:
does anyone agree or disagree?
mav, stirring the pot?
So, I'll play. I disagree... Not that I doubt it's Brazilian, but based on visual cues? I may be missing something, but I don't see any green streaks, which is inconclusive anyway. I do see dark grain pattern "blotches" (for want of a better word) and some "stair-stepping" on the outer edge of the lower bout that are typical with Brazilian but again inconclusive.
Is this an F-50R, F-47R, or F-30R, mav? If you know the year is '69 or earlier, then it probably *is* Brazilian.
And, all that said, this is academic. That is a beautiful piece of rosewood and I'll bet that instrument is wonderful and well aged.