That is an Artist Award headstock from after the 60ies, not JD's guitar (as already noted). It has the Guild G in the vase and you will also notice it has a plastic TRC whereas JD's had a standard 60's metal TRC with the Guild shield on it.
1975 AA with 5 pcs. neck:
https://images.reverb.com/image/upl...0,w_1600/v1508181550/w29vcauyh98piqzjpyvo.jpg
1982 AA-82 with 3 pcs. neck:
https://images.reverb.com/image/upl...0,w_1600/v1480316904/tojtmdy8mtvl5mllvswx.jpg
So the Grover Imperial tuners on the 1982 AA-82 were not correct as you see when you compare with below pictures.
But here's a pretty good view of the real headstock. You also see the guitar was played well in it's last 15 (?) years. The picture is from the Malibu Club, Young Life Camp in Canada, 1985:
Photo by Neal Schroeder
10 years before, that one is even better, from Saturday Night Live with Howard Cosell (Airdate: September 20, 1975).
Copyright: Photo by Ann Limongello/ABC Photo Archives/ABC via Getty Images
And a bit supersized: (Note: The word MODEL is sitting much lower on the inside compared to what Hans posted in post#8, confirming what he said that they were all a bit different)
Another nice one from 1974 or 1975 with Danny Kaye: You even see the label and it looks like AD 418 which would be the last 1969 made one? Well, no, I really can't read the label, just looks like this.
Copyright: Everett Collection
I thought the artist Award models had 5 piece necks (or maybe more) where as the F50R had a 3 piece neck traditionally. Just spit balling here but does anyone have a photo of the back of the neck on John Denver's F50R to see if it is 3 piece or 5 piece? Then you would know if John's Guitar neck was actually an entire Artist Award neck made for his guitar or a F50R neck with an Artist award shaped headstock. Would be interesting to know for sure. The AA-82 model appears to have a 3 piece neck from the ad link listed earlier in this thread.
This below picture is from the Tom Jones show (air date January 1, 1971) and shows the F-50 Spec from behind. The guitar was still pretty new at that point. Cleary a 3 pcs. neck.
Source: Getty Images
Same event (with the late Jim Sullivan on the Tom Jones show) from the other side, also here, if you zoom in, enlarge it and play with the light, you see the one strip on the neckheel:
https://media.gettyimages.com/photo...anjohn-denver-picture-id117116387?s=2048x2048
Ralf